| 1 | MMS | Saad (A320) Ltd | Callsign: Musaad Air, | CAY | AVCODES |
| 2 | MMS | SAAD (A320) Limited | | | ICAO1 |
| 3 | MMSB | MMS TRANSPORTATION | | | SCAC4 |
| 4 | MMSC | MITCHELL MILL SYSTEMS CANADA LTD | | | SCAC4 |
| 5 | MMSD | METHODE MEXIC | | | SCAC4 |
| 6 | MMSE | MONRO MOVING & STORAGE CO INC | | | SCAC4 |
| 7 | MMSF | MMS TRUCKING INC | | | SCAC4 |
| 8 | MMSG | MORRISON MOVING & STORAGE CO INC | | | SCAC4 |
| 9 | MMSH | MILLION MILES SHIPPING LTD | | | SCAC4 |
| 10 | MMSI | MIDWEST MOTORCYCLE SETUPS INC | | | SCAC4 |
| 11 | MMSL | MOBILEMED SUPP | | | SCAC4 |
| 12 | MMSM | MMS COMPANY LTD | | | SCAC4 |
| 13 | MMSO | METCALF MOVING & STORAGE CO INC | | | SCAC4 |
| 14 | MMSP | MACLEAN, M S TRANSPORT LTD | | | SCAC4 |
| 15 | MMSR | MIDWAY MOBILE SERVICE INC | | | SCAC4 |
| 16 | MMSS | MAMS MACHINE AND TOOL INC | | | SCAC4 |
| 17 | MMSU | MUSTANG CONTAINER SALES | | | SCAC4 |
| 18 | MMSV | MELONE MOTOR SERVICE INC | | | SCAC4 |
| 19 | MMSX | Blue Circle Inc. | added 7/1983; eliminated 4/1987 | | NAKINA |
| 20 | MMSX | Martin Marietta Corp. | added 1/1979; 1/1980; eliminated 7/1983 | | NAKINA |
| 21 | MMSX | Martin Marietta Cement, Division of Martin Marietta Corp. | added 1/1975; 1/1975; eliminated 1/1979 | | NAKINA |
| 22 | MMSX | Martin Marietta Cement, Division of Martin Marietta Corp. | added 1/75; 1/75; eliminated 1/79 | | NRHS |
| 23 | MMSX | Martin Marietta Corp. | added 1/79; 1/80 | | NRHS |
| 24 | MMSX | Blue Circle Inc. | eliminated 4/87 | | NRHS |
| 25 | MMSX | BLUE CIRCLE INC. {MARTIN MARIETTA CORP.] | | | PWRC |
| 26 | MMSX | Blue Circle | | | RSRV |
| 27 | MMSY | MOORE MOVING & STORAGE SYSTEMS | | | SCAC4 |
| 28 | MMSZ | MARTIN MARIETTA SYSTEMS, INC. | | | PWRC |
