| 1 | STS | Servicos Auxiliaries de Transportes Aereos (SATA) | Founded in 1954. Ceased operations. | BR | AVCODES |
| 2 | STS | Städtebahn Sachsen | | D | TRAFFIC |
| 3 | STS | Städtebahn Sachsen GmbH | | DE | VKM |
| 4 | STSB | STS | | | SCAC4 |
| 5 | STSD | STS TRANSPORTATION SERVICES INC | | | SCAC4 |
| 6 | STSG | STS LOGISTICAL SERVICES INC | | | SCAC4 |
| 7 | STSH | STRAIGHT SHOT EXPRESS | | | SCAC4 |
| 8 | STSLM | Siemens Transportation System Locomotives | | DE | VKM |
| 9 | STSN | STS TRANSIT INC | | | SCAC4 |
| 10 | STSO | ST SHIPPING TRANSPORT PTE LTD | | | SCAC4 |
| 11 | STSP | SEMINOLE TRANSPORTATION SPECIALISTS | | | SCAC4 |
| 12 | STSS | STANDARD TRANSPORTATION SERVICES | | | SCAC4 |
| 13 | STST | STEWART STILES TRUCK LINE, INC | | | SCAC1 |
| 14 | STSTZ | Städtische Straßenbahn Zürich | City: Zürich | CH | TRAFFIC |
| 15 | STSU | SINOCHEM TRADING (SINGAGPORE) PTE LTD | | SGP | BIC |
| 16 | STSV | SHARON TRANSPORT SERVICES | | | SCAC4 |
| 17 | STSW | SUMISHO GLOBAL LOGISTICS (USA) CORP | | | SCAC4 |
| 18 | STSW | Stettiner Stadtwerke | City: Szczecin | D | TRAFFIC |
| 19 | STSX | A.E. Staley Manufacturing Co. | added 10/1990; 1/1994-7/2000; eliminated 4/2005 | | NAKINA |
| 20 | STSX | Tate & Lyle Ingredients Americas, Inc. | added 4/2005; 7/2005 | | NAKINA |
| 21 | STSX | A.E. Staley Manufacturing Co. | added 10/90; 1/94-7/2000 | | NRHS |
| 22 | STSX | TATE & LYLE INGREDIENTS AMERICAS, INC. [(STLX) A. E. STALEY MFG. CO.] | | | PWRC |
| 23 | STSX | A. E. Staley Manufacturing | | | RSRV |
| 24 | STSX | TATE & LYLE INGREDIENTS AMERICAS IN | | | SCAC4 |
| 25 | STSX | A. E. Staley Manufacturing | | USA | TRAFFIC |
| 26 | STSY | STS TRUCKING INC | | | SCAC4 |
