| 1 | MSM | Aeromas | Callsign: Aeromas Express, | ROU | AVCODES |
| 2 | MSM | Aeromas | | | ICAO1 |
| 3 | MSM | MSM-Gruppe | | D | TRAFFIC |
| 4 | MSMA | MERIT STEAMSHIP AGENCY INC. | | | SCAC4 |
| 5 | MSMC | METAL SALES MANUFACTURING CORPORATI | | | SCAC4 |
| 6 | MSMD | MV SYDNEY MARIE | | | SCAC4 |
| 7 | MSMF | MIDDLE STATES MOTOR FREIGHT | | | PWRC |
| 8 | MSMG | MSM TRUCKING | | | SCAC4 |
| 9 | MSMH | METALSMI | | | SCAC4 |
| 10 | MSMI | MASTER MOVERS INC | | | SCAC4 |
| 11 | MSMJ | M SEVEN (M7) MARKETING INC | | | SCAC4 |
| 12 | MSMK | MIDSOUTH MARKETING INC | | | SCAC4 |
| 13 | MSML | MID-SOUTH MILLING COMPANY INC | | | SCAC4 |
| 14 | MSMM | MASTER SPECIAL MARITIME ENTERPRISE | | | SCAC4 |
| 15 | MSMP | MSM TRANSPORTATION INC | | | SCAC4 |
| 16 | MSMS | MARITIME SHIPPING SERVICES INC. | | | SCAC1 |
| 17 | MSMS | MODEL SHOP, THE | | | SCAC4 |
| 18 | MSMT | MESSM | | | SCAC4 |
| 19 | MSMU | MSC- MEDITERRANEAN SHIPPING COMPANY S.A. | | CH | BIC |
| 20 | MSMX | Mid South Milling Co., Inc. | added 4/1981; eliminated 10/1993; 1/1994 (not listed); added 10/2005 | | NAKINA |
| 21 | MSMX | Mid South Milling Co., Inc. | added 4/81; eliminated 10/93; 1/94 | | NRHS |
| 22 | MSMX | MID-SOUTH MILLING CO., INC. | | | PWRC |
| 23 | MSMX | Mid South Milling | | | RSRV |
| 24 | MSMX | MID SOUTH MILLING COMPANY INC | | | SCAC4 |
| 25 | MSMY | MTM SHIP MANAGMENT PTE LTD | | | SCAC4 |
