| | Organization Name(s) | Located In |
| | Following a Death, Canada Revenue Agency Procedures | Canada |
 | Fair Practices Commission | Toronto |
 | Fairhaven Amish Mennonite Church | Milverton |
 | Fairhaven Amish Mennonite Church, Fairhaven Christian Day School | Milverton |
 | Fairview Cemetery | Listowel |
 | Falstaff Family Centre | Stratford |
 | Family Services Perth-Huron, Adult Protective Services | Clinton |
 | Family Services Perth-Huron, Adult Protective Services | Stratford |
 | Family Services Perth-Huron, Connecting Seniors | Stratford |
 | Family Services Perth-Huron, Employee Assistance Program | Stratford |
 | Family Services Perth-Huron, Family Counselling | Stratford |
 | Family Services Perth-Huron, Family Home Program | Listowel |
 | Family Services Perth-Huron, Family Support -- Case Management | Stratford |
 | Family Services Perth-Huron, Family Violence Program for Men | Stratford |
 | Family Services Perth-Huron, Foundations Initiative | Stratford |
 | Family Services Perth-Huron, Grey-Bruce Credit Counselling. Owen Sound | Owen Sound |
 | Family Services Perth-Huron, Hospice Services | Stratford |
 | Family Services Perth-Huron, Literacy and Numeracy | Stratford |
 | Family Services Perth-Huron, Non-Profit Credit Counselling, Clinton | Clinton |
 | Family Services Perth-Huron, Non-Profit Credit Counselling, Stratford | Stratford |
 | Family Services Perth-Huron, Rotary Respite House, Respite Program | Stratford |
 | Family Services Perth-Huron, Social Work | Stratford |
 | Family Services Perth-Huron, Special Services at Home | Stratford |
 | Family Services Perth-Huron, Stratford | Stratford |
 | Family Services Perth-Huron, Violence Against Women Program | Stratford |
 | Farm Credit Canada | Stratford |
 | Farm Line Support Service | Perth |
 | Farm Safety Association, Perth County Branch | Guelph |
 | Federation of Health Regulatory Colleges of Ontario | Toronto |
| | Feline Friends Network | Stratford |
 | Fellowship Haven Amish Mennonite Church | Monkton |
| | Fem'aide | Ontario |
| | Festival City Amateur Radio Club | Stratford |
| | Festival City Big Band | Stratford |
 | Festival City Co-operative Homes | Stratford |
 | Festival City Twirlers | Stratford |
 | Festival Hydro | Stratford |
 | Festival School of Hairstyling | Stratford |
 | Field, John R | St Marys |
 | First Baptist Church, Listowel | Listowel |
 | First Baptist Church, St Marys | St Marys |
 | First Church of Christ Scientist | Stratford |
 | First Line Security | Walkerton |
 | First Lutheran Church | West Perth |
| | First St John Lutheran Church | Perth East |
 | Flex Physiotherapy | Stratford |
 | Flowers, Dr E H - Family Doctor | Stratford |
 | Foundation for Enriching Education | Seaforth |
 | Four County Labour Market Planning Board | Walkerton |
 | Friendship Centre | St Marys |
| | Friendship Force of Stratford and St Marys | Stratford |
 | Front Street Dental | Stratford |
 | Fullarton Minor Fastball | Fullarton |