| 11401 | SUMI | SUMMIT TRANSPORT INCORPORATED | | | SCAC4 |
| 11402 | SUMIC | Sumitomo Cement | | J | TRAFFIC |
| 11403 | SUMJ | SUMMERS | | | SCAC4 |
| 11404 | SUMK | SUMME | | | SCAC4 |
| 11405 | SUMM | SUMM | | | SCAC4 |
| 11406 | SUMN | SCHUURMA | | | SCAC4 |
| 11407 | SUMO | STUMO TRANSPORT | | | SCAC4 |
| 11408 | SUMR | SUMMERS | | | SCAC4 |
| 11409 | SUMS | SUPERB MOTOR SERVICE, INC | | | SCAC1 |
| 11410 | SUMS | SUMINISTROS MRO S DE R L DE C V | | | SCAC4 |
| 11411 | SUMU | SUMISHO GLOBAL LOGISTICS (CHINA) CO LTD | | PRC | BIC |
| 11412 | SUMV | SOUTHWEST MOVERS INC | | | SCAC4 |
| 11413 | SUMX | SUMITOMO CANADA LTD. | | | PWRC |
| 11414 | SUMY | SUPERIOR METAL COMPANY LLC | | | SCAC4 |
| 11415 | SUN | Antillana De Navegacion Aerea | | | ICAO1 |
| 11416 | SUN | Sunset Ry. Co. | 1/1975-7/2005 | | NAKINA |
| 11417 | SUN | Sunset Ry. Co. | 1/75-7/2000 | | NRHS |
| 11418 | SUN | SUNSET RAILWAY CO. | | | PWRC |
| 11419 | SUN | Sunset Railway | | | RSRV |
| 11420 | SUNB | SUNBURY TRANSPORT LIMITED | | | SCAC1 |
| 11421 | SUNB | SUNBURY TRANSPORT LIMITED | | | SCAC4 |
| 11422 | SUND | SUN DELIVERY INC | | | SCAC4 |
| 11423 | SUNDCT | Sunderland Corporation Transport | | GB | TRAFFIC |
| 11424 | SUNDS | Sundance Stage Lines | | US-CA | TRAFFIC |
| 11425 | SUNFAI | Sun Fai Transportation Co | City: Hong Kong | HK | TRAFFIC |
| 11426 | SUNG | SUNSHINE SHIPPING INC | | | SCAC4 |
| 11427 | SUNI | SUNNY CARRIER INC | | | SCAC4 |
| 11428 | SUNJ | SUPERIOR CONTAINER SERVICES LTD | | | SCAC4 |
| 11429 | SUNN | SUNSHINE BULK COMMODITIES INC | | | SCAC4 |
| 11430 | SUNO | SUNSAM TRANSPORTATION INC | | | SCAC4 |
| 11431 | SUNQ | SUN-NORTH SYSTEMS LTD | | | SCAC4 |
| 11432 | SUNR | SUNRISE DISTRIBUTION INC | | | SCAC4 |
| 11433 | SUNR | SUNRAIL GbR | | DE | VKM |
| 11434 | SUNS | SUNSET EXPRESS INC | | | SCAC4 |
| 11435 | SUNT | SUNRISE TRANSPORTATION SERVICES | | | SCAC4 |
| 11436 | SUNT | Sunray Travel | | GB | TRAFFIC |
| 11437 | SUNTR | Sun Tran | | USA | TRAFFIC |
| 11438 | SUNU | NICHIRIN GROUP CO | | J | BIC |
| 11439 | SUNV | SUNSHINE CATTLE CO | | | SCAC4 |
| 11440 | SUNW | SUNOCO INC (R&M) | | | SCAC4 |
| 11441 | SUNX | Sun Oil Co. | 7/1930-4/1970; eliminated 7/1970; added 7/1971; eliminated 1/1972 | | NAKINA |
| 11442 | SUNX | Sun Oil Co. of Pennsylvania | added 1/1972; 1/1975; eliminated 4/1978 | | NAKINA |
| 11443 | SUNX | Sun Petroleum Products Co., a Division of Sun Oil Co. of Pennsylvania | added 4/1978; 1/1980; eliminated 4/1982 | | NAKINA |
| 11444 | SUNX | Sun Refining and Marketing Co. | added 4/1982; 1/1994-7/2000; eliminated 4/2002 | | NAKINA |
| 11445 | SUNX | Sunoco Inc. (R&M) | added 4/2002; 7/2005 | | NAKINA |
| 11446 | SUNX | Sun Oil Co. | 4/38-4/70; eliminated 7/70; eliminated 1/72 | | NRHS |
| 11447 | SUNX | Sun Oil Co. of Pennsylvania | added 1/72; 1/75; eliminated 4/78 | | NRHS |
| 11448 | SUNX | Sun Petroleum Products Co., a Division of Sun Oil Co. of Pennsylvania | added 4/78; 1/80; eliminated 4/82 | | NRHS |
| 11449 | SUNX | Sun Refining and Marketing Co. | added 4/82; 1/94-7/2000 | | NRHS |
| 11450 | SUNX | SUNOCO INC. (SUN REFINING & MARKETING CO.,SUN OIL COMPANY OF PENNSYLVANIA0 | | | PWRC |
| 11451 | SUNX | Sun Refining and Marketing | | | RSRV |
| 11452 | SUNX | SUNOCO INC (R & M) | | | SCAC4 |
| 11453 | SUNZ | SUN OIL | | | PWRC |
| 11454 | SUO | Aeroservicios de San Luis, S.A. de C.V. | Callsign: Servicio Sanluis, | MEX | AVCODES |
| 11455 | SUO | Aeroservicios De San Luis | | | ICAO1 |
| 11456 | SUOC | STUART OIL COMPANY | | | SCAC4 |
| 11457 | SUOH | SOUTHERN TRANSPORT COMPANY | | | SCAC4 |
| 11458 | SUOI | SUPERIOR OIL COMPANY | | | SCAC4 |
| 11459 | SUOK | STUART SORENSON TRUCKING LLC | | | SCAC4 |
| 11460 | SUOM | SUPERIOR TOOL & MOLD INC | | | SCAC4 |
| 11461 | SUON | SUTTON TRANSPORT INC | | | SCAC4 |
| 11462 | SUOP | SUPERIOR RADIANT PRODUCTS LTD | | | SCAC4 |
| 11463 | SUOQ | SUNPRO INC | | | SCAC4 |
| 11464 | SUOY | SUPERIOR TRANSPORTATION COMPANY | | | SCAC4 |
| 11465 | SUP | Aerosuper, S.A. de C.V. | Callsign: Aerosuper, | MEX | AVCODES |
| 11466 | SUP | ABC Airlines, Inc. | Callsign: Air Dallas, | USA | AVCODES |
| 11467 | SUP | Aeronautical Charters, Inc. | Callsign: Sun Speed, | USA | AVCODES |
| 11468 | SUP | Aerosuper | | | ICAO1 |
| 11469 | SUP | Sturm & Partner GbR | | DE | VKM |
| 11470 | SUPA | SUPERIOR AIR FREIGHT (AIR FREIGHT D | | | SCAC4 |
| 11471 | SUPC | SUPERIOR TRUCKING INC | | | SCAC4 |
| 11472 | SUPE | SUPER EXPRESS INC | | | SCAC4 |
| 11473 | SUPF | SUPERIOR SALES INC | | | SCAC4 |
| 11474 | SUPJ | SUPERIOR TRUCK LINE INC | | | SCAC4 |
| 11475 | SUPK | SUPERIOR PACKING COMPANY/SOUTHLAND | | | SCAC4 |
| 11476 | SUPM | SUPREM | | | SCAC4 |
| 11477 | SUPP | SUPREME TRANSPORT INC | | | SCAC4 |
| 11478 | SUPQ | SUPERIOR TRANSPORT COMPANY INC | | | SCAC4 |
| 11479 | SUPR | SUPREME PETROLEUM INC | | | SCAC4 |
| 11480 | SUPT | SUPERIOR TRANSPORTATION CORP | | | SCAC4 |
| 11481 | SUPW | SUPERIOR SERVICE TRANSPORTATION | | | SCAC4 |
| 11482 | SUPX | Transit Co., Ltd. | 7/1930-1/1952; eliminated 10/1953 | | NAKINA |
| 11483 | SUPX | Union Tank Car Co. | added 10/1953; 7/1954-10/1957; eliminated 1/1960 | | NAKINA |
| 11484 | SUPX | Supresta U.S. LLC | added 7/2005; 7/2005; eliminated 1/2008 | | NAKINA |
| 11485 | SUPX | Transit Co., Ltd. | 4/38-1/52; eliminated 10/53 | | NRHS |
| 11486 | SUPX | Union Tank Car Co. | added 10/53; 10/57; eliminated 1/60 | | NRHS |
| 11487 | SUPX | *UNION TANK CAR CO. [TRANSIT CO., LTD.] | | | PWRC |
| 11488 | SUPX | +SUPRESTA U.S., LLC | | | PWRC |
| 11489 | SUPX | ICL SUPRESTA INC | | | SCAC4 |
| 11490 | SUPY | SUPER TRUCK LINES INC | | | SCAC4 |
| 11491 | SUQ | Superior Air S.A. | Callsign: Superior, | GR | AVCODES |
| 11492 | SUQC | SUTTER TRANSPORTATION INC | | | SCAC4 |
| 11493 | SUQD | SUPERSTAR TRANSPORT LTD | | | SCAC4 |
| 11494 | SUQL | SUPREME QUILTING 1970 LIMITED | | | SCAC4 |
| 11495 | SUQN | SUNTRANS LINE BENSENVILLE ILL | | | SCAC4 |
| 11496 | SUQO | SUMMIT TRUCKING INC | | | SCAC4 |
| 11497 | SUQP | SUPERIOR FEEDS INC | | | SCAC4 |
| 11498 | SUQY | SUTTA COMPANY INCORPORATED, THE | | | SCAC4 |
| 11499 | SUR | Surrey & Kent Flying Club | Callsign: Surrey, | GB | AVCODES |
| 11500 | SUR | Sun Air | | ET | AVCODES |
