| Abbreviation | Definition |
|---|---|
| FIIRSM | Fellow of the International Institute of Risk & Safety Management |
| FIM | Food Industry Management |
| FIMH | Folly and Infected Metal Health |
| FL | Filter Gauge |
| FL | Filter Lens |
| FL | Filter Loading |
| FLS | Fellow of the Linnean Society |
| FM | Film and Music |
| FM | Filter Medium |
| FM | Filter Membrane |
| FM | Finess Modulus |
| FMG | foreign medical graduate |
| FNATA | Fellow of the National Athletic Trainers' Association |
| FNC | Frogans Network Certificate |
| For.Od. | Forensic Odontology |
| FPAMS | Fellow, Pakistan Academy of Medical Sciences |
| FPD | Floating Point Data |
| FPP | Floating Point Precision |
| FRACP | Fellow of the Royal Australasian College of Physicians |
| FRCAM(Dublin) | Fellow , Royal College of Alternative Medicine (Dublin) |