| Abbreviation | Definition |
|---|---|
| FULC | First United Lutheran Church |
| FUMC | First United Methodist Church |
| FURY | Fellowship Of United Reformed Youth |
| FUSS | Friendship, Unity, Sharing, and Support |
| FUUCC | First Unitarian Universalist Church of Columbus |
| FUUCSA | First Unitarian Universalist Church of San Antonio |
| FVCC | Fox Valley Christian Church |
| FVL | Fox Valley Lutheran |
| FW | Faith Weaver |
| FW | Faith Weavers |
| FWB | Free Will Baptist |
| FWB | Free Will Baptist Church |
| FWBC | Faithful Word Baptist Church |
| FWC | Fort Worth Christian |
| FWLS | Forward With Lutheran Schools |
| FWO | Fish - Wine - Oil |
| FWV | Family With Voices |
| FX | Francis Xavier |
| FYE | First Year Enlightenment |
| FZY | Federation of Zionist Youth |