| Abbreviation | Definition |
|---|---|
| FCRS | First Church of Religious Science |
| FCWS | For Christ We Serve |
| FCYF | Free Church Youth Fellowship |
| FDBC | First Deaf Baptist Church |
| FEBC | First English Baptist Church (Maryland and Pennsylvania) |
| FEC | Fellowship of Evangelical Churches |
| FEC | Fujian Evangelical Church |
| FECG | First Evangelical Church of Glendale |
| FEIC | Fellowship of European International Churches |
| FELC | Fellowship of Evangelical Lutheran Churches |
| FELC | First English Lutheran Church |
| FELC | First Evangelical Lutheran Church |
| FEMC | Far East Mission Church |
| FEPC | First Evangelical Presbyterian Church |
| FFAC | First Filipino Alliance Church |
| FFMC | First Free Methodist Church |
| FGCC | Forest Grove Community Church |
| FGCC | Fresh Generation Community Church |
| FGCC | Full Gospel Christian Church |
| FGCI | Full Gospel Church in India |