| 1 | STC | Stadium City Limited | Callsign: Stadium, | GB | AVCODES |
| 2 | STC | Skytaxi Luftfahrt GmbH | Callsign: Air Jet, | A | AVCODES |
| 3 | STC | Stadium City Limited | | | ICAO1 |
| 4 | STC | SIMPSON TIMBER CO. | | | PWRC |
| 5 | STC | Saskatchewan Transportation Company | | CDN | TRAFFIC |
| 6 | STCB | STEUBENVILLE TRANSFER CO | | | SCAC1 |
| 7 | STCC | SHRED-TECH CORPORATION | | | SCAC4 |
| 8 | STCD | STATUS TRANSPORT CORP | | | SCAC4 |
| 9 | STCE | STRICKLAND TRANSP CO INC | | | PWRC |
| 10 | STCE | STAR TRANSPORTATION CO | | | SCAC4 |
| 11 | STCE | Société des Transports de Calais et Extensions | City: Calais | F | TRAFFIC |
| 12 | STCG | SUMMERS TRUCKING INC | | | SCAC4 |
| 13 | STCH | SIX THREE ONE ZERO FIVE NINE ONE (6 | | | SCAC4 |
| 14 | STCI | STANLEY TRUCKING COMPANY INC | | | SCAC4 |
| 15 | STCK | SOUTHWEST TRANSPORT CO | | | SCAC4 |
| 16 | STCM | Stagecoach Manchester | City: Manchester | GB | TRAFFIC |
| 17 | STCN | STRUCTURAL TRANSPORT INC | | | SCAC4 |
| 18 | STCO | SANDERS TRANSFER COMPANY | | | SCAC4 |
| 19 | STCU | FT MARINE SAS | | F | BIC |
| 20 | STCUM | Société de transport de la communauté urbaine de Montréal | 1985-06-20 - 2001-12-31 | CDN | TRAFFIC |
| 21 | STCUQ | Quebec Urban Community Transit Commission | | CDN | TRAFFIC |
| 22 | STCX | Standard Tank Car Co. | 8/1920-7/1923 | | NAKINA |
| 23 | STCX | Standard Tank Car Co. (Standard Transit Co.) | 7/1930-7/1932 | | NAKINA |
| 24 | STCX | Standard Transit Co. (General American Tank Car Corp.) | 7/1935 | | NAKINA |
| 25 | STCX | General American Transportation Corp. | 7/1937-1/1943 | | NAKINA |
| 26 | STCX | Sterling China Co. | 1/1980 | | NAKINA |
| 27 | STCX | Sterling China Co. (captive service) | 1/1994-7/2005 (not listed) | | NAKINA |
| 28 | STCX | Standard Transit Co. (General American Transportation Corp.) | Apr-38 | | NRHS |
| 29 | STCX | Sterling China Co. | Jan-80 | | NRHS |
| 30 | STCX | Sterling China Co. (captive service) | 1/94-7/2000 | | NRHS |
| 31 | STCX | *GENERAL AMERICAN TRANSPORTATION CORP. [STANDARD TRANSIT CO.; STANDARD TANK CAR CO.] | | | PWRC |
| 32 | STCX | +STERLING CHINA COMPANY (CAPTIVE SERVICE) | | | PWRC |
| 33 | STCX | Sterling China | | | RSRV |
| 34 | STCX | STERLING CHINA COMPANY | | | SCAC4 |
| 35 | STCY | STACEY MOVING & STORAGE | | | SCAC4 |
| 36 | STCZ | STAUFFER CHEMICAL CO. | | | PWRC |
