Organization / Program Name(s) Located In
Oakdale Child and Family Services, Oakdale Child and Family ServiceSpringwater
OCD NorthBarrie
OCD WellnessBarrie
Ogemawahj Tribal Council, Ogemawahj Tribal Training and Economic Resources, RamaChippewas of Rama First Nation
Ombudsman OntarioToronto
Ombudsman Ontario 
Once Upon a ChildBarrie
One Roof, MidlandMidland
OnePoint Association of REALTORS®Collingwood
Ontario Aboriginal Housing Services 
Ontario Association of Optometrists, Eye See...Eye LearnToronto Downtown Central
Ontario Clean Water Agency, Georgian Bay Highlands PlantSpringwater
Ontario Dental AssociationToronto Downtown North
Ontario Energy Board, Ontario Electricity Support Program (OESP) 
Ontario Energy Board (Central East)Toronto
Ontario Energy Board (Central East), Central East Ontario - No Physical Address, Low-Income Energy Assistance Program (LEAP) - Central East Application SitesToronto
Ontario English Catholic Teachers Association. Simcoe Muskoka UnitBarrie
Ontario Federation of Snowmobile Clubs, Mailing AddressBarrie
Ontario Federation of Snowmobile Clubs, Simcoe County, Mid Ontario Snowmobile TrailsTay
Ontario Genealogical Society, Simcoe County Branch - Mailing AddressBarrie
Ontario Health, Trillium Gift of Life NetworkToronto Downtown Central
Ontario Health atHome, Barrie - Huronia Rd, Community Nursing ClinicBarrie
Ontario Health atHome, Barrie - Sperling DrBarrie
Ontario Health atHome, Barrie - Sperling Dr, TelehomecareBarrie
Ontario Health atHome, nsmhealthline.caBarrie
Ontario Health atHome, No physical location, Reimbursement for Eligible Expenses for Medical SuppliesBarrie
Ontario Medical Imaging, MidlandMidland
Ontario Motor Vehicle Industry CouncilToronto
Ontario NatureToronto Downtown
Ontario Parole Board, Victim SupportToronto
Ontario Poison CentreToronto Downtown Central
Ontario Provincial Police, Midland - Hwy 12, Southern Georgian Bay DetachmentMidland
Ontario Provincial Police, Midland - Second St, Southern Georgian Bay DetachmentMidland
Ontario Provincial Police, OPP Satellite Office - Penetanguishene, Penetanguishene Satellite OfficePenetanguishene
Ontario Provincial Police, Orillia - Memorial, General HeadquartersOrillia
Ontario Provincial Police, Southern Georgian Bay Detachment - Midland Office, Southern Georgian Bay Detachment - Meeting FacilitiesMidland
Ontario Provincial Police, Wasaga Beach, Huronia West DetachmentWasaga Beach
Ontario Registered Music Teachers Association, Barrie Branch, No Physical AddressBarrie
Ontario Secondary School Teachers' Federation, Barrie, Simcoe County District 17Barrie
Ontario Senior Games AssociationBarrie
Ontario Society for the Prevention of Cruelty to Animals, OrilliaOrillia
Ontario SPCA and Humane Society, Barrie - 91 Patterson Rd, Ontario SPCA - Barrie Animal CentreBarrie
Ontario SPCA and Humane Society, Barrie - 91A Patterson Rd, Marion Vernon Memorial Animal ClinicBarrie
Ontario SPCA Midland & District Animal Centre, Provincial Animal Transfer Hub, Carver Off-Leash Dog ParkTay
Ontario SPCA Midland & District Animal Centre, Provincial Animal Transfer Hub, Community Support Services - Animal Centre and AdoptionTay
Ontario SPCA Midland & District Animal Centre, Provincial Animal Transfer Hub, Feline Spay/Neuter SurgeriesTay
Ontario Track3 Adaptive Sports Association, Toronto - Administrative OfficeToronto
Ontario Trails CouncilDeseronto
Ontario Vipassana Centre, Egbert, Dhamma ToranaEgbert
Ontario Water Centre (The)Georgina
Ontario, Ministry of the Solicitor General, Barrie, Probation and Parole Services, BarrieBarrie
Ontario, Ministry of the Solicitor General, Southwest Region - Midhurst, The Office of the Fire Marshal (OFM)Springwater
Ontario. Members of Provincial Parliament, Barrie-Springwater-Oro-Medonte Riding, Provincial Constituency Office - Doug DowneyBarrie
Ontario. Members of Provincial Parliament, Simcoe North Riding - Orillia Office, Provincial Constituency Office - Jill Dunlop, Simcoe North RidingOrillia
Ontario. Ministry of Children, Community and Social ServicesBarrie
Ontario. Ministry of Children, Community and Social Services, Barrie - Bayfield St, Youth Justice DivisionBarrie
Ontario. Ministry of Children, Community and Social Services, Barrie - Ferris Lane, Passport ProgramBarrie
Ontario. Ministry of Children, Community and Social Services, Newmarket Office, Special Services at Home and Assistance for Children with Severe DisabilitiesNewmarket
Ontario. Ministry of Children, Community and Social Services, Post Adoption Disclosure UnitToronto
Ontario. Ministry of Children, Community and Social Services. Family Responsibility OfficeToronto
Ontario. Ministry of Children, Community and Social Services. Victim Support LineToronto
Ontario. Ministry of Community and Social Services, Employment and Training Start Up Benefit, OrilliaOrillia
Ontario. Ministry of Community and Social Services, Employment Supports, OrilliaOrillia
Ontario. Ministry of Economic Development and Growth, Simcoe Muskoka OfficeSpringwater
Ontario. Ministry of Education, Central East Region, Child Care Quality Assurance and LicensingToronto
Ontario. Ministry of Environment, Conservation and ParksBarrie
Ontario. Ministry of Environment, Conservation and Parks, Awenda Provincial Park, Ontario Parks - Awenda Provincial ParkPenetanguishene
Ontario. Ministry of Environment, Conservation and Parks, Copeland Forest, Midhurst (Huronia) District OfficeSpringwater
Ontario. Ministry of Environment, Conservation and Parks, Midhurst District Office, Midhurst (Huronia) District OfficeSpringwater
Ontario. Ministry of Environment, Conservation and Parks, Oro-Medonte, Ontario Parks - Bass Lake Provincial ParkOrillia
Ontario. Ministry of Environment, Conservation and Parks, Port Severn, Ontario Parks - Six Mile Lake Provincial ParkPort Severn
Ontario. Ministry of Health, Dental Care For Low-Income SeniorsToronto
Ontario. Ministry of Health, Trillium Drug ProgramEtobicoke
Ontario. Ministry of Health, Health Care ConnectToronto Downtown Central
Ontario. Ministry of Health, Health811Toronto Downtown Central
Ontario. Ministry of Health, Ontario Health Insurance PlanToronto Downtown Central
Ontario. Ministry of Labour, Immigration, Training and Skills Development, Online / Web Serivce, Labour Market Information 
Ontario. Ministry of Labour, Immigration, Training and Skills Development [Central East], Barrie Regional Office, Apprenticeship Office, Barrie Regional OfficeBarrie
Ontario. Ministry of Labour, Immigration, Training and Skills Development. Employment Practices BranchToronto
Ontario. Ministry of Labour, Immigration, Training and Skills Development. Employment Practices Branch, Newmarket, Ontario. Ministry of Labour, Immigration, Training and Skills Development. Employment Practices Branch, Central Region West, NewmarketNewmarket
Ontario. Ministry of the Attorney General, Barrie Courthouse - 5th Floor, Crown AttorneyBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - 5th Floor, Justice of the Peace - Criminal MattersBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - 5th Floor, Victim / Witness Assistance ProgramBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Office 301, Enforcement and Finance - Sheriff's OfficeBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Office 301, Estates AdministrationBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Office 301, Jury LineBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Office 301, Superior Court of Justice - Civil Filing OfficeBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Office 301, Superior Court of Justice - Family CourtBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Office 301, Superior Court of Justice - Small Claims CourtBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Room 303, Family Law Information CentreBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Room 313, Manager of Court Operations OfficeBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Room 412, Superior Court of Justice - Trial Coordinators OfficeBarrie
Ontario. Ministry of the Attorney General, Barrie Courthouse - Room 501, Ontario Court of Justice - Criminal CourtBarrie
Ontario. Ministry of the Attorney General. Justice OntarioToronto
Ontario. Ministry of the Solicitor General, Midland, Probation and Parole Services, MidlandMidland
Ontario. Ministry of the Solicitor General, Orillia, Probation and Parole Office, OrilliaOrillia
Ontario. Ministry of the Solicitor General, Penetanguishene, Central North Correctional CentrePenetanguishene
Ontario. Ministry of Transportation, Barrie - Commerce Park Dr, Central Region - International Registration PlanBarrie
Ontario. Ministry of Transportation, Barrie - No physical address, Senior Driver's Licence Renewal ProgramBarrie
Operation Christmas Child, Simcoe WestBarrie
Operation Ukrainian Safe Haven 
OPP ChorusBarrie
Optimum Potential Chiropractic and NutritionOrillia
Order of The Eastern Star - Manson J. Bradley Chapter, #240, Chapter # 240 - Midland, Order of The Eastern StarMidland
Orillia Central Preschool, St Bernard's Catholic Elementary School, Infant, Toddlers and Preschoolers ProgramsOrillia
Orillia Community Nonprofit Housing CorporationOrillia
Orillia Fertility AssociatesOrillia
Orillia Museum of Art and History (The)Orillia
Orillia Public Library, Orillia, General Services and OutreachOrillia
Orillia Scottish FestivalOrillia
Orillia Soldiers' Memorial Hospital, Children's Therapy Services, Orillia - 170 Colborne St WOrillia
Orillia Soldiers' Memorial Hospital, Emergency Services, Orillia - 170 Colborne St WOrillia
Orillia Soldiers' Memorial Hospital, Midland - EarlyON Child and Family Centre, After Baby GroupMidland
Orillia Soldiers' Memorial Hospital, Orillia - 170 Colborne St W, Birthing Preparation ProgramOrillia
Orillia Soldiers' Memorial Hospital, Orillia - 170 Colborne St W, Regional Paediatric Asthma CentreOrillia
Orillia Soldiers' Memorial Hospital, Regional Domestic Violence Treatment Centre, Orillia - 170 Colborne St WOrillia
Orillia Soldiers' Memorial Hospital FoundationOrillia
Orillia, City of, Orillia Wheelchair Limousine ServiceOrillia
Orillia, City of, Orillia - 500 Gill St, Fire DepartmentOrillia
Orr Lake Golf ClubElmvale
Osteoporosis Canada [Central East], Simcoe Muskoka - Mailing Address, Simcoe Muskoka ChapterClearview (Simcoe County)
Our Lady of Lourdes Catholic School. ElmvaleElmvale
Our Town Food BankTottenham
Ovarian Cancer CanadaToronto
Overall Independence, Mailing AddressBarrie
Owen Hill Care Community, Barrie, Long Term Care HomeBarrie
Oxfam CanadaOttawa
Oxford College, Bayfield MallBarrie