| Family First Play Therapy Centre | Barrie |
| Family Law Education for Women, Online / Web Service | Toronto |
| Family Mental Health Initiative of Simcoe County | Barrie |
| Farm Credit Canada, Thornton | Essa |
| Farm View newspaper, Farm View | Minesing |
| Federated Women's Institutes of Ontario, Mailing Address, Simcoe South Kempenfeldt District | Ontario |
| Federated Women's Institutes of Ontario, Meeting Location, Simcoe Area | Minesing |
| Feet For Life Medical Foot Care | Barrie |
| Fellowship Villa | Orillia |
| Fem'aide : Francophone helpline for women affected by violence | Ontario |
| Ferris Lane Community Daycare, Barrie | Barrie |
| Fiddlehead Care Farm | Mono |
| Fierté Simcoe Pride | Barrie |
| Filipino-Canadian Association of Barrie and Suburban Areas | Barrie |
| Find a Notary Public or Commissioner of Oaths, Barrie, Commissioner of Oaths | Barrie |
| Find a Notary Public or Commissioner of Oaths, Barrie, Notary Public | Barrie |
| Find a Registered Assistive Devices Vendor, Online Service | Ontario |
| Firearm Safety Education Service of Ontario, Mailing Address | Orillia |
| Firebird Community Cycle | Barrie |
| First Christian Reformed Church, Barrie | Barrie |
| First Line Security, Mailing Address | Brockton |
| First Presbyterian Church, Community Dinners, Collingwood | Collingwood |
| Fittons IDA Pharmacy, Community Pharmacy and Opiate Addiction Treatment | Orillia |
| Flixbus | Collingwood |
| FOCUS Employment Services, FOCUS Employment Services - Alliston, Integrated Employment Services | New Tecumseth |
| FOCUS Employment Services, FOCUS Employment Services - Angus, Focus Community Development Corporation | Angus |
| FOCUS Employment Services, Ontario Employment Services, Angus | Angus |
| Focus Employment Services, Wasaga Beach, Integrated Employment Services | Wasaga Beach |
| Food In Simcoe County, Online Service | Barrie |
| Foodland Penetanguishene, Penetanguishene, Home Delivery Service | Penetanguishene |
| Four County Labour Market Planning Board, Stratford-Bruce Peninsula Economic Region (Bruce, Grey, Huron, Perth), Stratford-Bruce Peninsula Economic Region Workforce Board | Brockton |
| Free Counselling Society Canada | Toronto |
| Free Spirit Gardens, Collingwood, Community Gardens | Collingwood |
| Fresh 93.1, CHAY-FM | Midhurst |
| Friendly Wendy Senior Services | Barrie |
| Friends of Muskoka Midwives, Bracebridge | Bracebridge |
| Friends of the Midland Public Library, Midland Public Library, The Book Cellar | Midland |
| Friends of the Nancy Island Historic Site and Wasaga Beach Park | Wasaga Beach |
| Full Circle Lactation Services | Barrie |
| Fung Loy Kok Institute of Taoism, Mailing Address, Barrie and Orillia Branch | Barrie |
| Furry Friends Animal Shelter, Barrie | Barrie |
| Future Skills Centre | Toronto |