| F.A.S.T. Rescue Inc | Concord |
| Fabian (Dr Werner A), Holistic Physician | Barrie |
| Fair Practices Commission | Toronto Downtown |
| Fair Vote Canada, Mailing Address, Simcoe County Chapter | Barrie |
| Family First Play Therapy Centre | Bradford West Gwillimbury |
| Family Mental Health Initiative of Simcoe County | Barrie |
| Farm Credit Canada, Thornton | Thornton |
| Farm View | Utopia |
| February Blues Festival | Barrie |
| Federated Women's Institutes of Ontario, Mailing Address, Simcoe South Kempenfeldt District | Ontario |
| Federated Women's Institutes of Ontario, Meeting Location, Simcoe Area | Minesing |
| Fiddlehead Care Farm | Mono |
| Fierté Simcoe Pride | Waubaushene |
| Financial Consumer Agency of Canada | Ottawa |
| Firearm Safety Education Service of Ontario, Mailing Address | Orillia |
| First Class Rehab, Physiotherapy | Barrie |
| First Presbyterian Church, Collingwood, Community Dinners | Collingwood |
| Flu Clinic Schedules, Central East Ontario | Central Ontario |
| FOCUS Employment Services | New Tecumseth |
| FOCUS Employment Services, Angus | Essa |
| FOCUS Employment Services, Employment Ontario, Alliston | New Tecumseth |
| FOCUS Employment Services, ODSP Employment Supports Program, Alliston | New Tecumseth |
| Free & Low Cost Community Volunteer Income Tax Clinics Simcoe County, No Physical Location | Simcoe County |
| Free Dentistry Days - 211 Central East, Central East Ontario - No Physical Address | Ontario |
| French Legal Advice Line | Ontario |
| Friendly Wendy Senior Services | Barrie |
| Friends of the Nancy Island Historic Site and Wasaga Beach Park | Wasaga Beach |
| Furry Friends Animal Shelter, Barrie | Barrie |
| Future Skills Centre | Toronto Downtown |