| Abbreviation | Definition |
|---|---|
| FLESH | Foolishness, Lust, Ease, Selfishness, Hell |
| FLGC | Full Life Gospel Center |
| FLHS | Faith Lutheran High School |
| FLIC | Fullness Of Life In Christ |
| FLIGHT | Finding Life In Gods Heavenly Truth |
| FLT | Friendship, Love, and Truth |
| FLY | Fellowship of Lutheran Youth |
| FMBA | Florida Muslim Bar Association |
| FMC | Florida Mission Center |
| FMCI | Federation of Ministers and Churches International |
| FMCS | Fort Myers Christian School |
| FME | Fellowship of Medical Evangelism |
| FMM | Franciscan Missionsries of Mary |
| FMO | Federation of Muslim Organisations |
| FMSL | Franciscan Missionary Sisters of Littlehampton |
| FMVP | Festivals of Male Voice Praise |
| FMW | Federation of Muslim Women |
| FNCN | Federation of National Christian Nepal |
| FNCN | Federation of National Christians in Nepal |
| FNCN | Federation of National Christians Nepal |