| 1 | FMI | Air Fret de Mauritanie | | RIM | AVCODES |
| 2 | FMI | FIM Air Ltd. | IATA: MD, Callsign: First Myanmar, ICAO callsign changed to Gecko. | MYA | AVCODES |
| 3 | FMI | FMI Air Ltd. | IATA: ND, Callsign: Gecko, ICAO callsign changed from First Myanmar. | MYA | AVCODES |
| 4 | FMIC | FREIDMAN, MORRIS & COMPANY | | | SCAC3 |
| 5 | FMID | Florida Midland R.R. Co., Inc. | added 1/1988; 1/1994-7/2005 | | NAKINA |
| 6 | FMID | Florida Midland R.R. Co., Inc. | added 1/88; 1/94-7/2000 | | NRHS |
| 7 | FMID | FLORIDA MIDLAND RAILROAD COMPANY, INC. | | | PWRC |
| 8 | FMID | Florida Midland Railroad | | | RSRV |
| 9 | FMID | FLORIDA MIDLAND RAILROAD CO INC | | | SCAC3 |
| 10 | FMID | FLORIDA MIDLAND RAILROAD CO INC | | | SCAC4 |
| 11 | FMIF | FASHION MARKETING INC/FMI TRUCKING | | | SCAC3 |
| 12 | FMIF | FMI INC | | | SCAC4 |
| 13 | FMIG | FOCUS MICROWAVES INC | | | SCAC4 |
| 14 | FMII | F-M INSULATION INC | | | SCAC3 |
| 15 | FMIK | FMI TRUCK SALES & SERVICE | | | SCAC4 |
| 16 | FMIM | FALMOUTH MARITIME E N E | | | SCAC4 |
| 17 | FMIP | FREEDOM MARINE INC | | | SCAC4 |
| 18 | FMIS | FLETAMENTOS MARITIMOS S A | | | SCAC3 |
| 19 | FMIS | FMI SHIPPING | | | SCAC4 |
| 20 | FMIT | FMI TRUCKING INC | | | SCAC3 |
| 21 | FMIU | FONG-MING GASES INDUSTRIAL CO., LTD | | RC | BIC |
| 22 | FMIW | FMI CONTAINER LINES INC | | | SCAC4 |
| 23 | FMIX | CCKX, Inc. | 1/1994; eliminated 7/1999; 7/2000-7/2005 (not listed) | | NAKINA |
| 24 | FMIX | Fabricated Metals, Inc. | added 1/1986; eliminated 7/1986 | | NAKINA |
| 25 | FMIX | Fairbanks Morse, Inc. | 4/1970 | | NAKINA |
| 26 | FMIX | Fairbanks Morse, Inc. | Apr-70 | | NRHS |
| 27 | FMIX | Fabricated Metals, Inc. | added 1/86; eliminated 7/86 | | NRHS |
| 28 | FMIX | CCKX, Inc. | 1/94; eliminated 7/99; 7/2000 | | NRHS |
| 29 | FMIX | FAIRBANKS MORSE, INC. | | | PWRC |
| 30 | FMIX | *FABRICATED METALS, INC. | | | PWRC |
| 31 | FMIX | +CCKX INCORPORATED | | | PWRC |
| 32 | FMIX | Fairbanks Morse (CCKX Inc.) | | | RSRV |
| 33 | FMIX | CCKX INCORPORATED | | | SCAC4 |
| 34 | FMIX | Fairbanks - Morse | | USA | TRAFFIC |
