Organization / Program Name(s)Located In Office Phone
Oak Park Co-operative Children's CentreLondon 519-473-0512
Oaks Retirement VillageWallaceburg 519-627-9292
Oakwood Bible Chapel, Windsor - Cabana RdWindsor 519-969-5730
Obstetrics, Palliative Care, and Newborn Circumcision ClinicLondon 519-472-2920
OCASIToronto Downtown North 416-322-4950
OCASI, CitizenshipCounts.caOntario 416-322-4950
OCASI, NewYouth.caOntario 416-322-4950
OCASI, Settlement.OrgToronto Downtown North 416-322-4950
Occupational Health Clinics for Ontario Workers, SarniaPoint Edward 519-337-4627
Occupational Health Clinics for Ontario Workers, Windsor - Marentette AveWindsor 519-973-4800
Off Road Addiction Toy DriveCentral Elgin 519-451-6076
Oil Heritage Family ChurchOil Springs 519-834-2984
Oil Springs (Village of). Municipal Services, Oil SpringsOil Springs 519-834-2939
Oil Springs (Village of). Municipal Services, Oil Springs, Mayor's OfficeOil Springs 519-834-2939
Oil Springs Food Bank, Oil Heritage Family ChurchOil Springs 519-834-2984
Old Colony Mennonite Church - Wheatley, Wheatley - Wheatley Townline, Anabaptist ChurchWheatley 519-825-4400
Old East Village Business Improvement AreaLondon 516-645-7662
Old East Village Community AssociationLondon  
Old Masonville Ratepayers AssociationLondon  
Old North Physiotherapy - PT Health Care SolutionsLondon 226-271-3266
Old South Business AssociationLondon  
Old South Community OrganizationLondon  
Old South Maternity CareLondon 519-438-5101
Olde Sandwich Towne Business Association, Windsor - Sandwich St, Business AssociationWindsor 519-258-0361
Olinda-Ruthven United Church, Ruthven - Queen BlvdRuthven 519-326-3138
Olivia DiMaio - Early Childhood Education Centre, LaSalle - Main Office - Sprucewood Ave, Child Care Centre and Extended Day CareLaSalle 519-962-8572
Olivia DiMaio - Early Childhood Education Centre, Lakeshore - Advance Blvd, Child Care Centre and Extended Day CareLakeshore 519-727-5939
Olivia DiMaio - Early Childhood Education Centre, LaSalle - Malden Rd, Child Care Centre and Extended Day CareLaSalle 519-962-8572
Ombudsman for Banking Services and InvestmentsToronto Downtown Central 416-287-2877
Ombudsman OntarioToronto Downtown Central 416-586-3300
OMEGA Fertility CenterLondon 519-685-5559
Once Upon A Time Child Care Centre, Essex - Holy Name Catholic Elementary School - Fairview Ave, Child Care CentreEssex 519-776-6555
Once Upon A Time Child Care Centre, Maidstone - St Mary's Catholic Elementary School - County Rd 46, Child Care Centre and Extended Day CareMaidstone (Village of) 519-776-6555
ONE CARE Home & Community Support Services, Grand Bend, Grand Bend Adult Day CentreGrand Bend Toll free 1-877-502-8277
One Step At A Time, Mailing AddressWindsor 519-996-7837
Oneida Nation of the ThamesSouthwold 519-652-3244
Oneida Nation of the Thames, Child Care CentreSouthwold 519-652-7209
Oneida Nation of the Thames, Community CentreSouthwold 519-652-0855
Oneida Nation of the Thames, Community DevelopmentSouthwold 519-652-1055
Oneida Nation of the Thames, Economic DevelopmentSouthwold 519-652-9350
Oneida Nation of the Thames, Employment and Training ServicesSouthwold 519-652-9350
Oneida Nation of the Thames, Fire DepartmentSouthwold 519-652-9632
Oneida Nation of the Thames, Health Services, Community Diabetes ProgramSouthwold 519-652-0500
Oneida Nation of the Thames, Health Services, Community HealthSouthwold 519-652-0500
Oneida Nation of the Thames, Health ServicesSouthwold 519-652-0500
Oneida Nation of the Thames, Health Services, Healthy Babies Healthy ChildrenSouthwold 519-652-0500
Oneida Nation of the Thames, Health Services, Home and Community Care ProgramSouthwold 519-652-0500
Oneida Nation of the Thames, Health Services, Human Wellness ServicesSouthwold 519-652-9844
Oneida Nation of the Thames, Health Services, Maternal Child Health ProgramSouthwold 519-652-0500
Oneida Nation of the Thames, Health Services, Medical TransportationSouthwold 519-652-0500
Oneida Nation of the Thames, Health Services, Mental HealthSouthwold 519-652-0500 ext 823
Oneida Nation of the Thames, Language and Culture ProgramSouthwold 519-652-6227
Oneida Nation of the Thames, Life-Long Learning - Oneida Education CentreSouthwold 519-652-1580
Oneida Nation of the Thames, Oneida Nation Head StartSouthwold 519-652-3848
Oneida Nation of the Thames, Band Representative ProgramSouthwold 519-652-6705
Oneida Nation of the Thames, Oneida Nation Paramedic Services (EMS)Southwold 519-652-9916
Oneida Nation of the Thames, Ontario WorksSouthwold 519-652-1055
Oneida Nation of the Thames, Onyota'a:ka Family Healing LodgeSouthwold 519-652-0657
Oneida Nation of the Thames, Police DepartmentSouthwold 519-289-5577
Oneida Nation of the Thames, Standing Stone SchoolSouthwold 519-652-3271
Oneida Nation of the Thames, TSI'Nu:Yoyantle'Na'Tuhuwatisni, Long-Term Care HomeSouthwold 519-652-1345
Ontario Addiction Treatment Centres, London Clinic, Addiction Treatment CentreLondon 519-204-8430
Ontario Addiction Treatment Centres, Ingersoll - Thames St S, Methadone Maintenance TreatmentIngersoll 519-303-0580
Ontario Addiction Treatment Centres, SarniaSarnia 519-491-2109
Ontario Addiction Treatment Centres [Windsor], University Ave W, Ontario Addiction Treatment CentresWindsor 519-252-0991
Ontario Addiction Treatment Centres [Windsor], Windsor - Tecumseh Rd E, Ontario Addiction Treatment CentresWindsor 519-735-6500
Ontario Association for Families of Children with Communication Disorders, Woodstock Head Office Location - Mailing AddressWoodstock 519-290-1763
Ontario Association of Social Workers, Windsor - Southwestern Branch - Mailing AddressWindsor Contact by email only
Ontario Beekeepers Association, Chatham - London Dr, Southwestern Ontario Beekeepers Association ChathamChatham 519-351-8338
Ontario Breast Screening Program, South West, Breast Screening ServicesLondon 519-432-0255
Ontario Clean Water Agency, Belle River - Rourke Line, Wastewater Treatment PlantBelle River 519-727-6256
Ontario College of PharmacistsToronto Downtown North 416-962-4861
Ontario. Ministry of Training, Colleges and Universities [Windsor], Windsor Office, Apprenticeship OfficeWindsor 519-973-1441
Ontario Energy Board, Consumer RelationsToronto Downtown North Greater Toronto Area 416-314-2455
Ontario Energy Board, Oxford County - Mailing Address, LEAP Emergency Financial AssistanceOxford County Erie Thames Powerlines Corporation customers: 519-539-6166 * Tillsonburg Hydro Inc. customers: 519-842-4447
Ontario Federation for Cerebral PalsyToronto Downtown 416-244-9686
Ontario Genealogical Society, Oxford County BranchWoodstock 519-421-1700
Ontario Greenhouse Vegetable Growers, Leamington - Seneca Rd, Greenhouse Vegetable Growers Licensing BoardLeamington 519-326-2604
Ontario Healthy Communities CoalitionToronto Downtown Central 416-408-4841
Ontario Heritage Trust, Dresden, Uncle Tom's Cabin Historic SiteDresden 519-683-2978
Ontario Human Rights CommissionToronto Downtown Central General Inquiries 416-326-9511
Ontario Institute of Audio Recording TechnologyLondon 519-686-5010 ext 22
Ontario Labour Relations BoardToronto Downtown Central 416-326-7500
Ontario Ministry of Agriculture, Food and Rural Affairs, RidgetownRidgetown 519-674-1690
Other Key Contacts:
AGRICORP Customer Action Centre: 1-888-247-4999
OFIDP (Ontario Farm Income Disaster Program): 1-877-838-5144
Farm Business Registration: 1-800-469-2285
Foodland Ontario: 519-826-3643
Greenhouse and Processing Crops Research Centre, Harrow: 519-738-2251
University of Guelph Ridgetown Campus: 519-674-1500
Canadian Food Inspection Agency (food health hazzards/complaints): 1-800-701-2737
Ontario. Ministry of the Attorney General, Windsor - Chatham St E, Ontario Court of Justice - Criminal, Family, and Youth CourtWindsor Criminal 519-973-6600  
Family 519-973-6670
Ontario. Ministry of the Attorney General, Windsor - Chatham St E, Suite 6076, Direct Accountability Program (DAP)Windsor 519-258-4848
Ontario. Ministry of the Attorney General, Windsor - City Hall, Ontario Court of Justice - Provincial Offences CourtWindsor 519-255-6555
Ontario. Ministry of the Attorney General, Windsor - Windsor Ave, Superior Court of Justice - Civil / Criminal / Enforcements / Small Claims / Family CourtWindsor Inquiries 519-973-6620  
Sheriff 519-973-6606
Ontario. Ministry of the Solicitor General, Windsor - McDougall Ave, Youth Justice Services - ProbationWindsor Automated directory: 519-254-6205
Ontario. Ministry of Heritage, Sport, Tourism & Cultural Industries, West Region - Regional Services Branch - Windsor OfficeWindsor 519-965-5369
Ontario. Ministry of Children, Community and Social Services, Windsor - Erie St E, Assistance for Children with Severe DisabilitiesWindsor 519-254-5355
Ontario. Ministry of Children, Community and Social Services, Windsor - Erie St E, Ontario Disability Support ProgramWindsor Automated directory 519-254-1651
Ontario. Ministry of Children, Community and Social Services, Windsor - Erie St E, Special Services at Home ProgramWindsor 519-254-5355 ext 2298
Ontario Provincial Police [Essex County], OPP - Essex County Main Detachment - Hicks Rd, Ontario Provincial PoliceEssex General inquiries 519-723-2491
Ontario Provincial Police, Kingsville DetachmentKingsville 519-733-2345
Ontario Provincial Police [Essex County], Lakeshore Detachment, Ontario Provincial PoliceBelle River 519-728-1810
Ontario Provincial Police, Tecumseh, Lakeshore, Essex/Harrow, Kingsville and Leamington DetachmentTecumseh 519-723-2491
Ontario Provincial Police, Tecumseh, Lakeshore, Essex/Harrow, Kingsville and Leamington Detachment, Project Safe TradeTecumseh 519-735-2424
Ontario. Ministry of the Solicitor General, Windsor - Dougall Ave, Probation and Parole ServicesWindsor 519-254-3291
Ontario. Ministry of the Solicitor General, Leamington - Erie St S, Probation and Parole ServicesLeamington 519-326-9005
Ontario. Ministry of Economic Development, Job Creation and Trade, Windsor - Howard Ave, Ministry of Economic Development, Job Creation and TradeWindsor 519-252-1704
Ontario. Ministry of the Environment, Conservation and Parks, Windsor and Area Office - Rhodes Dr, Ministry of the Environment, Conservation and ParksWindsor 519-948-1464
Ontario. Ministry of Health and Long-Term Care, Windsor - Mailing Address, Windsor Central Ambulance CommunicationWindsor Non-Emergency Services/Inquiries: 519-256-2373
Ontario. Ministry of Labour, Windsor Essex County Branch - Rhodes DrWindsor 519-256-8277
Ontario. Ministry of Finance, Ontario Senior Homeowners' Property Tax GrantOshawa  
Ontario. Ministry of the Attorney General, Windsor - Chatham St E, Crown AttorneyWindsor 519-253-1104
Ontario. Ministry of the Attorney General, Windsor - Chatham St E, Peace Bonds and Restraining OrdersWindsor 519-253-1104
Ontario. Ministry of Tourism, Culture and Sport, Windsor - Park St E, Ontario Travel Information Centre - WindsorWindsor Travel: 519-973-1338
Ontario Nurses' Association, Windsor OfficeWindsor 519-966-6350
Ontario One Call (ON1Call), Guelph - Cooper Dr, Call Before You DigOntario Corp Office: 519-265-8006
Ontario Poison CentreToronto Downtown Central 416-813-5900
Ontario Provincial Police, PetroliaPetrolia 519-882-1011 detachment phone number * 911 or 1-888-310-1122 for emergencies
Ontario Provincial Police, CorunnaCorunna 519-862-4680
Ontario Provincial Police, Point EdwardPoint Edward 519-336-8691
Ontario Provincial Police, Oxford County Detachment - IngersollIngersoll Administration: 519-485-6554
Ontario Provincial Police, Oxford County Detachment - TillsonburgTillsonburg Administration: 519-688-6540
Ontario Provincial Police, Chatham-KentChatham 519-352-1122
Ontario Provincial Police - Elgin Detachment, St Thomas Head Office, Police ServicesCentral Elgin Call for Service: 1-888-310-1122
Administration: 519-631-2920
Ontario Provincial Police - Elgin Detachment, Dutton Office, Police ServicesDutton-Dunwich Call for Service: 1-888-310-1122
Administration: 519-762-2833
Ontario Provincial Police - Middlesex Detachment, Strathroy Head Office, Police ServicesStrathroy Administration: 519-245-2323
Ontario Provincial Police - Middlesex Detachment, Glencoe Office, Police ServicesGlencoe Administration: 519-287-2620
Ontario Provincial Police - Middlesex Detachment, London Office, Police ServicesLondon Administration: 519-681-0300
Ontario Provincial Police - Middlesex Detachment, Lucan Office, Police ServicesLucan Administration: 519-227-4423
Ontario Provincial Police [Essex County], Lakeshore Detachment, Lakeshore Community Policing CommitteeBelle River 519-728-1810
Ontario Provincial Police [Essex County], OPP - Essex County Main Detachment - Hicks Rd, Collision Reporting CentreEssex 519-723-2491 ext 5501
Ontario Public Interest Research Group, Windsor - University of Windsor - Dillon HallWindsor 519-253-3000 ext 3872
Ontario Questers, Windsor - Mailing Address, Preserving Historic Landmarks and ArtifactsWindsor  
Ontario Rett Syndrome AssociationLondon 519-474-6877
Ontario Society of Senior Citizens' OrganizationsNorth York Central 416-785-8570
Ontario Student Nutrition Program - Southwest Region, Windsor Head Office, Nutrition Education Services - Ontario Student Nutrition ProgramWindsor 519-254-4866
Ontario Truck Driving School, London, Private Career CollegeLondon 519-858-9338
Ontario Universities' Application CentreGuelph Application inquiries 519-823-1063 * all other inquiries 519-823-1940
Ontario. Members of Provincial Parliament, Lambton-Kent-Middlesex Riding - Wallaceburg Office, Provincial Constituency Office - Monte McNaughtonWallaceburg 519-627-1015
Ontario. Members of Provincial Parliament, Sarnia-Lambton Riding, Provincial Constituency Office - Bob BaileySarnia 519-337-0051
Ontario. Members of Provincial Parliament, London North Centre District, Member of Provincial ParliamentLondon 519-432-7339
Ontario. Members of Provincial Parliament, Elgin—Middlesex—London District, Member of Provincial ParliamentSt Thomas 519-631-0666
Ontario. Members of Provincial Parliament, Lambton—Kent—Middlesex District - Strathroy Office, Member of Provincial ParliamentStrathroy 519-245-8696
Ontario. Members of Provincial Parliament, London West District, Member of Provincial ParliamentLondon 519-657-3120
Ontario. Members of Provincial Parliament, London—Fanshawe District, Member of Provincial ParliamentLondon 519-668-1104
Ontario. Members of Provincial ParliamentToronto Downtown Central General Inquiry 416-325-7500
Ontario. Members of Provincial Parliament, Oxford Riding, Provincial Constituency Office - Ernie HardemanWoodstock Constituency 519-537-5222
Ontario. Members of Provincial Parliament, Windsor-West Riding, Provincial Constituency Office - Lisa GretzkyWindsor Constituency 519-977-7191 * Queens Park 416-325-0235
Ontario. Members of Provincial Parliament, Windsor-Tecumseh Riding, Provincial Constituency Office - Percy HatfieldWindsor Constituency 519-251-5199 * Queens Park 416-325-6773
Ontario. Members of Provincial Parliament, Chatham-Kent-Leamington Riding - Leamington Office, Provincial Constituency Office - Rick NichollsLeamington 519-326-3367
Ontario. Members of Provincial Parliament, Essex Riding, Provincial Constituency Office - Taras NatyshakEssex Constituency Office: 519-776-6420 
Parliamentary Office: 416-325-0714
Ontario. Members of Provincial Parliament, Chatham-Kent-Essex Riding - Chatham Office, Provincial Constituency Office - Rick NichollsChatham 519-351-0510
Ontario. Members of Provincial Parliament, Lambton-Kent Middlesex Riding - Forest Office, Provincial Constituency Office - Monte McNaughtonForest 519-245-8696
Ontario. Ministry for Seniors and AccessibilityToronto Downtown Central  
Ontario. Ministry of Agriculture, Food and Rural Affairs, Guelph - Provincial HeadquartersGuelph Agricultural Information Contact Centre, Program Feedback / Questions / General Inquiries 1-877-424-1300
Ontario. Ministry of Agriculture, Food and Rural Affairs, Oxford County - WoodstockWoodstock 519-537-6621
Ontario. Ministry of Agriculture, Food and Rural Affairs (OMAFRA), London Resource Centre, Agriculture and Food ServicesLondon 519-873-4070
Ontario. Ministry of Children, Community and Social Services, West Region, Children, Community and Social ServicesLondon 519-438-5111
Ontario. Ministry of Children, Community and Social ServicesToronto Downtown Central 416-212-7432
Ontario. Ministry of Children, Community and Social Services, Sarnia - Christina St N, Youth Justice Services - ProbationSarnia 519-336-2245
Ontario. Ministry of Children, Community and Social Services, West Region, Assistance for Children with Severe DisabilitiesLondon 519-438-5111
Ontario. Ministry of Children, Community and Social Services, West Region, Special Services at HomeLondon 519-438-5111
Ontario. Ministry of Children, Community and Social Services, Youth Justice ServicesLondon 519-438-5111
Ontario. Ministry of Children, Community and Social Services. Family Responsibility OfficeNorth York West Inquiry line 416-326-1817 ; Automated line 416-326-1818
Ontario. Ministry of Children, Community and Social Services. Ontario Disability Support ProgramToronto Downtown Central Information Line 416-325-5666 ; Disability Adjudication Unit 416-326-5079 ; Toronto Regional Office 416-325-0500
Ontario. Ministry of Colleges and Universities, Student Financial Assistance Branch, Student Financial AssistanceThunder Bay  
Ontario. Ministry of Community and Social Services, Sarnia, Ontario Disability Support ProgramSarnia 519-337-3735
Ontario. Ministry of Community and Social Services, London Office, Ontario Disability Support Program (ODSP)London 519-438-5111
Ontario. Ministry of Community and Social Services, Woodstock - Peel St, Ontario Disability Support ProgramWoodstock 519-537-5579
Ontario. Ministry of Community and Social Services, Chatham - Richmond St, Ontario Disability Support ProgramChatham 519-352-5040
Ontario. Ministry of Community Safety and Correctional Services, Woodstock - Dundas St, Probation and Parole ServicesWoodstock 519-539-8175
Ontario. Ministry of Education, London Regional Office, Educational ServicesLondon 519-667-1440
Ontario. Ministry of EducationToronto Downtown Central 416-325-2929
Ontario. Ministry of Education, Web/Online Service, EarlyON Child and Family Centres - Location FinderToronto Downtown General Enquiries: 416-325-2929
Ontario. Ministry of Education, London Regional Office, Child Care Quality Assurance and Licensing OfficeLondon 1-877-510-5333
Ontario. Ministry of Finance, London Tax OfficeLondon  
Ontario. Ministry of Government and Consumer Services. Consumer Protection OntarioToronto Downtown Central Consumer Complaint Line 416-326-8800
Ontario. Ministry of Health, Toronto - University Avenue, Public Health CareToronto Downtown Central 416-327-4327
ServiceOntario: 416-314-5518
Ontario. Ministry of Health, Etobicoke - Mailing address only, Trillium Drug ProgramEtobicoke 416-642-3038
Ontario. Ministry of Health, No physical address, Health Care ConnectToronto Downtown Central  
Ontario. Ministry of Health, No physical address, Ontario's Fertility ProgramToronto Downtown Central ServiceOntario: 416-314-5518
Ontario. Ministry of Health, No physical address, Pharmacy Smoking Cessation ProgramToronto Downtown Central ServiceOntario: 416-314-5518
Ontario. Ministry of Health, No physical address, Sexual Health Infoline Ontario/The MainlineToronto Downtown 416-392-2437
Ontario. Ministry of Health, No physical address, Telehealth OntarioToronto Downtown Central  
Ontario. Ministry of Health, Oshawa - King St, Healthy Smiles OntarioDurham Region  
Ontario. Ministry of Health, Toronto - 5700 Yonge St, Assistive Devices ProgramNorth York Central 416-327-8804
Ontario. Ministry of Health, Toronto - 5700 Yonge St, Home Oxygen TherapyNorth York Central 416-327-8804
Ontario. Ministry of Health, Toronto - 5700 Yonge St, Ontario Public Drug ProgramsEtobicoke ServiceOntario: 416-314-5518
Ontario. Ministry of Health, Toronto - 5775 Yonge St, Ontario Health Insurance PlanToronto Downtown Central ServiceOntario: 416-314-5518
Ontario. Ministry of Labour, London Office, Employment Standards and Workplace Safety ServicesLondon 519-439-2210
Ontario. Ministry of Labour, London - Richmond St, Office of the Worker Adviser (OWA)London 519-873-4490
Ontario. Ministry of Labour, London Office, Office of the Employer AdviserLondon  
Ontario. Ministry of Labour, Windsor Essex County Branch - Rhodes Dr, Office of the Employer AdviserWindsor 519-300-0663
Ontario. Ministry of Labour, Windsor-Essex County Branch - Ouellette Ave, Office of the Worker AdviserWindsor 519-254-7558
Ontario. Ministry of Labour, Training and Skills Development, London Regional Office, Apprenticeship OfficeLondon 519-675-7788
Ontario. Ministry of Labour, Training and Skills Development, Ontario. Ministry of Training, Colleges and UniversitiesToronto Downtown Central 416-325-2929
Ontario. Ministry of Labour, Training and Skills Development, Sarnia Office, Apprenticeship OfficeSarnia 519-542-7705
Ontario. Ministry of Labour, Training and Skills Development, Chatham Office, Apprenticeship OfficeChatham 519-354-2766
Ontario. Ministry of Long-Term Care, No physical address, Long-Term Care ACTION LineToronto Downtown Central Outside Ontario: 416-326-6777
Ontario. Ministry of Long-Term Care, No physical address, Reports on Long-Term Care HomesToronto Downtown Central  
Ontario. Ministry of Natural Resources and Forestry, Aylmer - District Office, Conservation ServicesAylmer 519-773-9241
Ontario. Ministry of the Attorney General, Chatham - Grand Ave W, Crown Attorney - ChathamChatham 519-355-2240
Ontario. Ministry of the Attorney General, Provincial Offences Court Office, Municipal Provinical Offences ServicesLondon Courts Administration General Inquiries: 519-661-1882
Prosecution Office General Inquiries: 519-661-1911
Ontario. Ministry of the Attorney General, London Office, Office of the Public Guardian and TrusteeLondon 519-660-3140
Ontario. Ministry of the Attorney General, Superior Court of Justice and Ontario Court of Justice, LondonLondon 519-660-3000
Ontario. Ministry of the Attorney General, London Office, Victim/Witness Assistance ProgramLondon 519-660-3041
Ontario. Ministry of the Attorney General, St Thomas, Victim/Witness Assistance ProgramSt Thomas 519-633-1920
Ontario. Ministry of the Attorney General, Oxford County - Woodstock Court House, Family Law Information CentreWoodstock 519-539-6187
Ontario. Ministry of the Attorney General, Woodstock, Victim/Witness Assistance ProgramWoodstock 519-421-3903
Ontario. Ministry of the Attorney General, Sarnia, Ontario Court of JusticeSarnia 519-333-2950
Ontario. Ministry of the Attorney General, Chatham, Victim/Witness Assistance Program ChathamChatham 519-355-2216
Ontario. Ministry of the Attorney General, Blenheim, Ontario Court of Justice - Provincial Offences CourtChatham 519-352-8484
Ontario. Ministry of the Attorney General, Chatham - Grand Ave W, Superior Court of Justice - Civil / Criminal / Enforcements / Small Claims / Family Court (Chatham)Chatham 519-355-2200
Ontario. Ministry of the Attorney General, Sarnia, Victim/Witness Assistance ProgramSarnia 519-337-1766
Ontario. Ministry of the Attorney General, Windsor - Chatham St E, Family Law Information CentreWindsor 519-973-6670 or 519-973-6620
Ontario. Ministry of the Attorney General, Windsor - Chatham St E, Victim and Witness Assistance ProgramWindsor 519-253-2897
Ontario. Ministry of the Attorney General. Office of the Children's LawyerToronto Downtown Central 416-314-8000
Ontario. Ministry of the Attorney General. Victim Support LineOntario Toll free across Ontario 1-888-579-2888 --Toronto area 416-314-2447
Ontario. Ministry of the Environment , Conservation and Parks, Public Information CentreToronto Downtown Central 416-325-4000
Ontario. Ministry of the Environment and Climate Change, London Regional OfficeLondon 519-873-5000
Ontario. Ministry of the Solicitor General, Elgin-Middlesex Detention CentreLondon 519-686-1922
Ontario. Ministry of the Solicitor General, West Region - London, Regional Coroner's OfficeLondon 519-661-6624
Ontario. Ministry of the Solicitor General, London North, Probation and ParoleLondon 519-679-7121
Ontario. Ministry of the Solicitor General, London Core, Probation and ParoleLondon 519-661-6631
Ontario. Ministry of the Solicitor General, London South, Probation and ParoleLondon 519-680-1525
Ontario. Ministry of the Solicitor GeneralToronto Downtown Central 416-326-5000 ; Institutional Services 416-327-9911 ; Community Services 519-675-4742
Ontario. Ministry of the Solicitor General, Sarnia - Christina St N, Probation and Parole ServicesSarnia 519-337-2365
Ontario. Ministry of the Solicitor General, Chatham - Grand Ave W, Probation and Parole Services ChathamChatham 519-352-1243
Ontario. Ministry of the Solicitor General, Emergency Management OntarioToronto Downtown Central 647-329-1100
Ontario. Ministry of the Solicitor General, South West Detention Centre, Correctional CentreMaidstone South West Detention Centre: 519-967-3100
Ontario. Ministry of Tourism, Culture and Sport, Point Edward, Ontario Travel Information CentrePoint Edward 519-344-7403
Ontario. Ministry of Transportation, London, Middlesex, Elgin and Oxford, Enforcement and Field ServicesLondon 519-873-4100
Ontario. Ministry of Transportation, Windsor Office - Ouellette PlWindsor Enforcement of commercial motor vehicles: 519-972-9044 
Demerit Points/Senior Group Sessions scheduling office: 1-800-396-4233 
International Registration Plan : 519-972-0237
Ontario. Ministry of Transportation, Windsor Office - Ouellette Pl, Enforcement ServicesWindsor Enforcement and Vehicle Inspection: 519-972-9044 
IRP (International Registration Plan): 519-972-0237; 519 972-8866 
Commercial Vehicle Inspection Facility,Hwy 401: 519-723-4526 
Safety Check Licensing Inquiries: 519-972-3403 
O/O (Oversized/Overload) Permits - St Catharine's Office: 416-246-7166 / 800-387-7736 
Drive Test: 1-888-570-6110 
Service Ontario: 1-800-268-4686; 1-800-267-8097; 1-800-387-3445
Ontario. Ministry of Transportation, Windsor Office - Ouellette Pl, Senior Driver Licence Renewal ProgramWindsor  
Operation Sharing, Ingersoll - Church St, Ingersoll - Oxford StIngersoll 226-232-4034
Operation Sharing, Woodstock - Wilson StWoodstock 519-539-3361
Operation Sharing, Foods for Friends, Ingersoll - Church StIngersoll 226-232-4034
Operation Sharing, Ingersoll - Oxford St, The Meeting Place Drop In CentreIngersoll 226-231-1513
Operation Sharing, Woodstock - 723 Dundas St, Cynthia Anne Centre for Addictions (The)Woodstock 519-537-0336
Operation Sharing, Woodstock - 723 Dundas St, The Inn Oxford's Homeless ShelterWoodstock Operation Sharing 519-539-3361
Operation Sharing, Woodstock - Vansittart Ave, Bullwinkle's EateryWoodstock 519-539-3361
Operation Sharing, Woodstock - Vansittart Ave, Bullwinkle's Hospitality Training CentreWoodstock 519-320-1372
Operation Sharing, Woodstock - Wilson St, Chaplaincy ServicesWoodstock 519-539-3361
Operation Sharing, Woodstock - Wilson St, Christmas Place StoreWoodstock 519-539-3361
Operation Sharing, Woodstock - Wilson St, Coats for Kids/AdultsWoodstock 519-539-3361
Operation Sharing, Woodstock - Wilson St, Extended Family ProjectWoodstock 519-539-3361
Operation Sharing, Woodstock - Wilson St, Foods for FriendsWoodstock 519-539-3361
Operation Sharing, Woodstock - Wilson St, Jackson's FundWoodstock 519-539-3361
Operation Sharing, Woodstock - Wilson St, The Meeting Place Drop In CentresWoodstock 519-539-3361
Operational Stress Injury Social Support, Southwestern Ontario, Stress Injury Support GroupLondon Peer Support: 519-660-5275 ext 5264 or 905-572-4041
Orchard Park Cooperative Homes, Essex - Maidstone AveEssex 519-776-6973
Orchard Park Nursery SchoolLondon 519-434-3404
Orchard Park Sherwood Forest Ratepayers GroupLondon  
Orford-Highgate Minor League Ball, Highgate - Queen StHighgate  
Organization for Literacy in Lambton, Sarnia, Literacy and Basic SkillsSarnia 519-332-4876
Organization for Literacy in Lambton, Sarnia, Tutoring Services for Children and AdultsSarnia 519-332-4876
Orphaned Kitten Nurseries, Windsor - North Town Line RdWindsor 519-944-1420
Osteoporosis Canada, London and Thames Valley Chapter, Osteoporosis Support ServicesLondon National Office: 416-696-2663
Ostomy Canada Society, Sarnia, Ostomy Support Group of Sarnia-LambtonSarnia 519-344-9797
Our Kids Child Care, SarniaSarnia 519-344-2333
Our Lady Help Of Christians ParishWatford 519-876-3240
Our Lady of Guadalupe Non-Profit Home of Windsor, Windsor - Alexandrine St, Residential Program for Pregnant Women and New Mothers with InfantsWindsor Program Manager 519-962-4861
Our Lady of Mercy Roman Catholic Church, Sarnia - Christina St NSarnia 519-336-2653
Our Lady of Mount Carmel Catholic Church, Windsor - Mount Royal DrWindsor 519-969-1400
Our Lady of Perpetual Help Roman Catholic Church, Windsor - Grand Marais Rd E, Roman Catholic Church and Food PantryWindsor 519-966-1953
Our Lady of The Assumption Catholic Parish, Windsor - Huron Church Rd, Catholic ParishWindsor 519-253-2493
Our Lady of the Atonement Roman Catholic Church, Windsor - Forest Glade Dr, Roman Catholic ChurchWindsor 519-735-6023
Over 55 (London)London 519-438-1111
Overeaters Anonymous, London RegionLondon  
Overeaters Anonymous, Woodstock - Mailing AddressWoodstock 505-891-2664
Oxford (County of)., Woodstock - Reeve St, Municipal ServicesWoodstock 519-539-9800 ext 3001
Oxford (County of)., Human Services, Woodstock - Reeve StWoodstock 519-539-9800
Oxford (County of)., Ingersoll - Alma St, Human ServicesIngersoll 519-425-1020
Oxford (County of)., Ingersoll - Thames St S, Long Term Care, Woodingford LodgeIngersoll 519-485-7053
Oxford (County of)., NEWS - Community Income Tax ProgramOxford County CRA, Volunteer Co-ordinator: 1-855-581-0962
Oxford (County of)., Tillsonburg - Tillson Ave, Human ServicesTillsonburg 519-842-9000
Oxford (County of)., Tillsonburg - Venison St W, Long Term Care, Woodingford LodgeTillsonburg 519-688-4874
Oxford (County of)., Woodstock - Hunter St, Provincial OffencesWoodstock 519-537-4890 ext 3913
Oxford (County of)., Woodstock - Juliana Dr, Long Term Care, Woodingford LodgeWoodstock 519-421-5556
Oxford (County of)., Woodstock - Light St, ArchivesWoodstock 519-539-9800 ext 3918
Oxford (County of)., Woodstock - Mill St, Paramedic ServicesWoodstock 519-539-9800 x3915
Oxford (County of)., Woodstock - Reeve St, CirclesWoodstock 519-539-9800
Oxford (County of)., Woodstock - Reeve St, Holiday Sharing Guide and Holiday ProgramsOxford County 519-539-9800 ext 3184
Oxford (County of)., Woodstock - Reeve St, Library ServicesOxford County 519-539-9800
Oxford (County of)., NEWS - Municipal DirectoryWoodstock 519-539-9800
Oxford Community Child Care, Woodstock - Market StWoodstock 519-539-4419
Oxford Community Child Care, Ingersoll - Raglan St, EarlyON Child and Family CentreIngersoll 519-539-4419
Oxford Community Child Care, Ingersoll - Raglan St, Ingersoll Children's CentreIngersoll 519-485-4788
Oxford Community Child Care, Thamesford - Dundas St, Thamesford PreschoolThamesford 519-539-4419
Oxford Community Child Care, Woodstock - Market St, EarlyON Child and Family CentreWoodstock 519-539-4419
Oxford Community Child Care, Woodstock - Market St, Licensed Home Child CareWoodstock 519-539-4419
Oxford Community Child Care, Woodstock - Market St, School Age ProgramsWoodstock 519-539-4419
Oxford Community Child Care, Woodstock - rue Bristol, Garderie Francophone du comté d'OxfordWoodstock 226-289-2510, 519-539-4419
Oxford Community Foundation, Woodstock - Hunter StWoodstock 226-667-6404
Oxford County Amateur Radio Club, WoodstockWoodstock  
Oxford County Animal Rescue, Woodstock - Dundas StWoodstock  
Oxford County Community Health Centre, Woodstock - Metcalf StWoodstock 519-539-1111
Oxford County Community Health Centre, Ingersoll - King St EIngersoll 519-539-1111 
Ingersoll office 519-539-1111 ext 248
Oxford County Community Health Centre, Tillsonburg - Tillson AveTillsonburg 519-842-9008 ext 323
Oxford County Community Health Centre, Woodstock - Metcalf St, RAAM Rapid Access Addiction Medicine ClinicWoodstock 519-539-1111
Oxford County Naval Veterans Association, Woodstock - James StWoodstock 519-537-8991
Oxford County Rainbow CoalitionOxford County 519-421-9901 ext 3451
Oxford County Walk-In Counselling, Oxford County - Various LocationsOxford County 519-539-8055
Oxford Drug Awareness Committee, No Physical AddressOxford County 519-421-9901 ext 3493
Oxford Historical Society, Woodstock - Light StWoodstock 519-421-1700
Oxford Manor Retirement Home, Ingersoll - Oxford StIngersoll 519-485-0350
Oxford Park Community AssociationLondon  
Oxford Recovery ClinicLondon 519-645-6000
Oxford Reformed Christian School, Mount Elgin - Plank LineMount Elgin 519-485-1142
Oxford Technical Training Centre, Woodstock - College Avenue Secondary SchoolWoodstock Fanshawe College: 519-421-0144;
College Avenue Secondary School: 519-539-0020
Oxford Walk-In ClinicLondon 519-433-4999
Oxford Women in Networking, Woodstock - Mailing AddressWoodstock  
Ozanam Manor, Sarnia - Wellington StSarnia 519 344-2062 ext 2174