| 1 | SFS | Southern Frontier Air Transport Ltd. | Callsign: Southern Frontier, | CDN | AVCODES |
| 2 | SFS | Swiss Flight Services SA | IATA: ZV, Callsign: Topo, Designator ZV* recalled by IATA. | CH | AVCODES |
| 3 | SFS | Swiss Flight Services SA | Callsign: Topo, Designator ZV* recalled by IATA. | CH | AVCODES |
| 4 | SFS | Southern Frontier Air Transport | | | ICAO1 |
| 5 | SFS | Santa Fe Southern Ry., Inc. | added 7/1992; eliminated 1/1994; 1/1994 (not listed); eliminated 1/1998; 7/2000; added 7/2002, eliminated 10/2002; added 1/2004; 7/2005; eliminated 7/2008 | | NAKINA |
| 6 | SFS | Santa Fe Southern Ry., Inc. | added 7/92; eliminated 1/94; eliminated 1/98; 7/2000 | | NRHS |
| 7 | SFS | SANTA FE SOUTHERN RAILWAY, INC. | | | PWRC |
| 8 | SFS | Santa Fe Southern Railway | | | RSRV |
| 9 | SFS | SANTA FE SOUTHERN RAILWAY | | | SCAC4 |
| 10 | SFS | Strade Ferrate Sovvenzionate | | I | TRAFFIC |
| 11 | SFSB | SFS CARTAGE INC | | | SCAC4 |
| 12 | SFSC | SEVILLE FREIGHT SYSTEMS INC | | | SCAC4 |
| 13 | SFSE | SCOTT FREIGHT SERVICES | | | SCAC4 |
| 14 | SFSF | BNSF Ry. Co. | 7/2005 | | NAKINA |
| 15 | SFSF | BNSF RWY. CO. | | | PWRC |
| 16 | SFSJ | SUPERIOR FREIGHT SERVICES INC | | | SCAC4 |
| 17 | SFSK | SECURE FREIGHT SYSTEMS (USA) INC | | | SCAC4 |
| 18 | SFSL | SANGHA FREIGHT SYSTEMS INC | | | SCAC4 |
| 19 | SFSM | S FRANGOULIS (SHIP MANAGEMENT) LTD | | | SCAC4 |
| 20 | SFSM | Strade Ferrate Secondarie Meridionali | | I | TRAFFIC |
| 21 | SFSM | Strade Ferrate Secondarie Meridionali | | IT | VKM |
| 22 | SFSN | SPLIT-FIRE SALES INC | | | SCAC4 |
| 23 | SFSO | SMITH, FRED & SONS INC | | | SCAC4 |
| 24 | SFSP | SERIFOS TANKER CORPORATION | | | SCAC4 |
| 25 | SFSR | SEVEN FOUR SEVEN (747) TRANSPORT IN | | | SCAC4 |
| 26 | SFSS | SOENKSEN FREIGHT SYSTEMS, INC | | | SCAC1 |
| 27 | SFST | SPITFIRE FIELD SERVICES COMPANY LLC | | | SCAC4 |
| 28 | SFSU | {CJSC "SEAFOOD-SERVICE"};ZIPCODE=220004 | | BY | BIC |
| 29 | SFSU | DOLE FRESH FRUIT INTERNATIONAL LTD | | | SCAC4 |
| 30 | SFSV | STANTON FARM SERVICES INC. | | | PWRC |
| 31 | SFSV | STEELHORSE FREIGHT SERVICES INC | | | SCAC4 |
| 32 | SFSX | San Francisco Transportation Services Co. | added 1/1978; eliminated 10/1978 | | NAKINA |
| 33 | SFSX | San Francisco Transportation Services Co., Inc. | added 10/1978; 1/1980; eliminated 10/1983; 1/1994-7/2005 (not listed) | | NAKINA |
| 34 | SFSX | San Francisco Transportation Services Co. | added 1/78; eliminated 10/78 | | NRHS |
| 35 | SFSX | San Francisco Transportation Services Co., Inc. | added 10/78; 1/80; eliminated 10/83; 1/94-7/2000 | | NRHS |
| 36 | SFSX | SAN FRANCISCO TRANSPORTATION SERVICES CO. | | | PWRC |
| 37 | SFSX | San Francisco Transportation Services | | | RSRV |
| 38 | SFSX | SAN FRA | | | SCAC4 |
| 39 | SFSY | SHARK FREIGHT SYSTEMS LLC | | | SCAC4 |
