| Abbreviation | Definition |
|---|---|
| FMANT | Frequency Modulation ANTenna |
| FMANTS | Flight MANifesT |
| FMC | Flight Medicine Clinic |
| FMC | Full Mission-Capable |
| FMCF | First Manned Captive Flight |
| FMDM | Flex Multiplexer/De-Multiplexer |
| FMEC | Forward Master Events Controller |
| FMECA | Failure Mode, Effects, and Criticality Analysis |
| FML | Fault Message Line |
| FML | Final Materials List |
| FMO | Flight Medical Officer |
| FMOF | First Manned Orbital Flight |
| FMOFEV | First Manned Orbital Flight with Extra-Vehicular activity |
| FMOFPL | First Manned Orbital Flight with PayLoad |
| FMR | Field Modification Request |
| FMR | Function Maximum Rate |
| FMS | Food Management System |
| FMSP | Frequency Modulation Signal Processor |
| FMT | Flight Management Team |
| FMX | Frequency Modulation Transmitter |