| 1 | STM | Sociedad Anonima Empresa de Turismo Aerec | Callsign: Saetura, | YV | AVCODES |
| 2 | STM | Streamline Aviation Ltd. | Callsign: Streamline, ICAO designator changed to SSW | GB | AVCODES |
| 3 | STM | Star Airlines | Callsign: Starmac, Founded 2008 | MK | AVCODES |
| 4 | STM | Skystream Airlines AS | Callsign: Skystream, | EST | AVCODES |
| 5 | STM | Société de transport de Montréal | City: Montréal | CDN | TRAFFIC |
| 6 | STMA | St. Maries River R.R. Co. | added 10/1980; 1/1994-7/2005 | | NAKINA |
| 7 | STMA | St. Maries River R.R. Co. | added 10/80; 1/94-7/2000 | | NRHS |
| 8 | STMA | ST. MARIES RIVER RAILROAD CO. | | | PWRC |
| 9 | STMA | St. Maries River Railroad | | | RSRV |
| 10 | StMB | Steinhuder Meer-Bahn eV | Wunstorf | D | privat-bahn.de |
| 11 | STMB | STRIMBU TRANSPORT INC | | | SCAC4 |
| 12 | STMB | Steinhuder Meer-Bahn | | D | TRAFFIC |
| 13 | STMC | SERVTRANS MENTENANCE SA | | RO | VKM |
| 14 | STME | STUTSMAN, ELDON C INC | | | SCAC4 |
| 15 | STMG | STALLMAN TRUCKING | | | SCAC4 |
| 16 | STMH | STATE MOTOR HAULAGE INC | | | SCAC4 |
| 17 | STMI | STEM, THOMAS S TRUCKING INC | | | SCAC4 |
| 18 | STMK | SCARBROUGH LOGISTICS LTD | | | SCAC4 |
| 19 | STML | STAR WAY SHIPPING LTD | | | SCAC4 |
| 20 | STMM | STEMM TRANSFER AND STORAGE, INC | | | SCAC4 |
| 21 | STMN | STEINMANN, DAVID P | | | SCAC1 |
| 22 | STMN | SWEATMAN TRUCKING LLC | | | SCAC4 |
| 23 | STMO | SERVICIO DE TRANSPORTE MONARCA S A | | | SCAC4 |
| 24 | STMP | STARR AIR AND TRANSPORTATION LLC | | | SCAC4 |
| 25 | STMQ | STEELMAN TRANSPORTATION INC | | | SCAC4 |
| 26 | STMT | STONE TRANSPORT LLC | | | SCAC4 |
| 27 | STMU | CMA-CGM | | F | BIC |
| 28 | STMU | DELMAS SAS | | | SCAC4 |
| 29 | STMW | SYSTEMWIDE AIRFREIGHT | | | SCAC4 |
| 30 | STMX | St. Clair Coal Mining Co. (Elkhorn Piney Coal Mining Co.) | 8/1920 | | NAKINA |
| 31 | STMX | A.E. Staley Manufacturing Co., Industrial Products Group | added 1/1984; 1/1994-7/2005; eliminated 10/2005 | | NAKINA |
| 32 | STMX | A.E. Staley Manufacturing Co., Industrial Products Group | 1/94-7/2000 | | NRHS |
| 33 | STMX | *ELKHORN PINEY COAL MINING CO. [ST. CLAIR COAL MINING CO.] | | | PWRC |
| 34 | STMX | *A.E. STALEY MANUFACTURING, INDUSTRIAL PRODUCTS GROUP | | | PWRC |
| 35 | STMX | *STATE MUSEUM | | | PWRC |
| 36 | STMX | A. E. Staley Manufacturing | | | RSRV |
| 37 | STMY | ST. MARYS TRUCKING COMPANY, INC. | | | SCAC1 |
| 38 | STMY | ST MARYS TRUCKING COMPANY INC | | | SCAC4 |
| 39 | STMZ | (TM) TEXAS MEXICAN RAILWAY | | | PWRC |
| 40 | STMZ | Texas Mexican Railway | | | RSRV |
| 41 | STMZ | TEXAS MEXICAN RAILWAY COMPANY, THE | | | SCAC4 |
