| 1 | SF | Tassili Airlines | ICAO: DTH, Callsign: Tassili Air, | DZ | AVCODES |
| 2 | SF | Air Charter | ICAO: ACF, Callsign: Air Charter, Merged into Air France | F | AVCODES |
| 3 | SF | Shanghai Airlines | ICAO: CSH, Callsign: Shanghai Air, IATA designator changed to FM | PRC | AVCODES |
| 4 | SF | Société Aerienne Francaise d'Affretements | | F | AVCODES |
| 5 | SF | Societe Air Charter SAFA | ICAO: ACF, Name changed to Air Charter | F | AVCODES |
| 6 | SF | STEAMTOWN FOUNDATION | | | PWRC |
| 7 | SF | SWARTHOUT COACHES INC | | | SCAC4 |
| 8 | SF | | City: San Francisco | USA | TRAFFIC |
| 9 | SFA | Aerotransportes Entre Rios Srl | Callsign: Aersa, Designator RS recalled by IATA | RA | AVCODES |
| 10 | SFA | Cirus Aero | Callsign: Sfera, | MD | AVCODES |
| 11 | SFA | Aerotransportes Entre Rios Srl | IATA: RS, Callsign: Aersa, Designator RS recalled by IATA | RA | AVCODES |
| 12 | SFA | Sefa | Callsign: Sefa, Name changed to ENAC. | F | AVCODES |
| 13 | SFA | ENAC | Callsign: Sefa, ICAO designator changed to NAK. Name changed from Sefa | F | AVCODES |
| 14 | SFA | SEFA | | | ICAO1 |
| 15 | SFA | SOUTHERN FREIGHT ASSOCIATION - TCAM ID | | | PWRC |
| 16 | SFAB | SILVER FOX TRANSPORTATION | | | SCAC4 |
| 17 | SFAD | S F ADVANCE TRANSPORTATION SERVICES | | | SCAC4 |
| 18 | SFAF | SHORT FUSE TRUCKING INC | | | SCAC4 |
| 19 | SFAI | Società per le strade ferrate dell'Alta Italia | 1865 - 1885 | I | TRAFFIC |
| 20 | SFAL | SF&L Ry., Inc. | 1/1994-7/2005 | | NAKINA |
| 21 | SFAL | SF&L Ry., Inc. | 1/94-7/2000 | | NRHS |
| 22 | SFAL | SF&L RAILWAY, INC. | | | PWRC |
| 23 | SFAL | SF and L Railway | | | RSRV |
| 24 | SFAL | SF&L RAILWAY INC | | | SCAC4 |
| 25 | SFAO | SHAN FREIGHTWAY | | | SCAC4 |
| 26 | SFAP | SELF, AMANDA HORSE TRAINING | | | SCAC4 |
| 27 | SFAP | SF Airporter | | US-CA | TRAFFIC |
| 28 | SFAQ | SF BOOT BRUSH ENTERPRISES | | | SCAC4 |
| 29 | SFAT | ST CANUT FARMS | | | SCAC4 |
| 30 | SFAU | SCANDINAVIAN FERRY TRAILERS*AS | | | SCAC4 |
| 31 | SFAW | S F SYSTEMS LTD | | | SCAC4 |
| 32 | SFAY | SAFEWAY TRANSPORTATION | | | SCAC4 |
| 33 | SFAZ | SUN FLOWER ARMY AMMUNITION PLANTS | | | PWRC |
| 34 | SFB | Air Sofia | IATA: CT, Callsign: Air Sofia, IATA Prefix: 551, Closed down by Bulgarian Authorites on 05 March 2007. | BG | AVCODES |
| 35 | SFB | His Majesty The Sultan's Flight | | BRU | AVCODES |
| 36 | SFB | Air Sofia | | | ICAO1 |
| 37 | SFB | Svendborg - Fåborg Banen | 1916 - 1954 | DK | jernbanen.dk |
| 38 | SFB | San Francisco Belt | 1/1994 | | NAKINA |
| 39 | SFB | San Francisco Belt | Jan-94 | | NRHS |
| 40 | SFB | *RETIRED 04-20-93 ATP (0688) | | | PWRC |
| 41 | SFB | *SAN FRANCISCO BELT RAILROAD | | | PWRC |
| 42 | SFB | SAN FRANCISCO BAY RAILROAD | | | SCAC4 |
| 43 | SFB | Strada Ferrata di Biella, Biella-Santhiá | | I | TRAFFIC |
| 44 | SFBC | SPARTAN FREIGHT SYSTEMS INC | | | SCAC4 |
| 45 | SFBD | SOUTH FLORIDA FRUIT AND | | | SCAC4 |
| 46 | SFBD | Svendborg - Fåborg Banen | Real: SFB, 1916 - 1954 | DK | TRAFFIC |
| 47 | SFBE | SHIFFLET BROTHERS ENTERPRISES, INC | | | SCAC1 |
| 48 | SFBE | SHIFFLET BROTHERS ENTERPRISES INC | | | SCAC4 |
| 49 | SFBF | SANDERSON FARMS | | | SCAC4 |
| 50 | SFBG | SAMSON FUEL & TRUCKING | | | SCAC4 |
| 51 | SFBH | SUGAR FOODS CORP | | | SCAC4 |
| 52 | SFBI | SOVEREIGN FREIGHT BROKERS INC | | | SCAC4 |
| 53 | SFBJ | STOFFEL, BRIAN J TRUCKING | | | SCAC4 |
| 54 | SFBK | SOUTH FLORIDA BAKERY INC | | | SCAC4 |
| 55 | SFBM | STRAWN FARMS LC | | | SCAC4 |
| 56 | SFBN | SHAMROCK FREIGHT BROKERS INC | | | SCAC4 |
| 57 | SFBO | STAFFORD FREIGHT SYSTEMS INC | | | SCAC4 |
| 58 | SFBP | SCHAFER, BERNARD PETROLEUM INC | | | SCAC4 |
| 59 | SFBQ | SHUFFLEBOX TRANSPORTATION LLC | | | SCAC4 |
| 60 | SFBR | SAN FRANCISCO BELT RAILROAD | | | PWRC |
| 61 | SFBS | STARS FERRY TRANSPORT INC | | | SCAC4 |
| 62 | SFBU | SOLVAY FLUOR GMBH | | D | BIC |
| 63 | SFC | Shuswap Air | Callsign: Shuswap, Designator 3S recalled by IATA | CDN | AVCODES |
| 64 | SFC | Shuswap Air | IATA: 3S, Callsign: Shuswap, Designator 3S recalled by IATA | CDN | AVCODES |
| 65 | SFC | Shuswap Flight Centre | | | ICAO1 |
| 66 | SFCB | SAVANNAH FOOD COMPANY | | | SCAC4 |
| 67 | SFCD | SIX FOUR ZERO SEVEN SIX NINE TWO (6 | | | SCAC4 |
| 68 | SFCE | SANCHEZ FREIGHT CORPORATION | | | SCAC4 |
| 69 | SFCH | SILVER FOX CHARTERS INC | | | SCAC4 |
| 70 | SFCI | STILES FUEL CO INC | | | SCAC4 |
| 71 | SFCK | SUPREME LOGISTICS (HONG KONG) LTD | | | SCAC4 |
| 72 | SFCM | SEATRAFFIC LTD | | | SCAC4 |
| 73 | SFCO | SIMULATION F1 COCKPIT INC | | | SCAC4 |
| 74 | SFCP | SAFCOMAR LINES LTD | | | SCAC4 |
| 75 | SFCR | SAGA FOREST CARRIERS | | | SCAC1 |
| 76 | SFCR | SAGA FOREST CARRIERS INTERNATIONAL | | | SCAC4 |
| 77 | SFCS | ST FRANCIS XAVIER UNIVERSITY | | | SCAC4 |
| 78 | SFCT | SAMUEL & FILS & CIE LTEE | | | SCAC4 |
| 79 | SFCU | SOFAST SHIPPING LIMITED | | HK | BIC |
| 80 | SFCU | Steele Fabrication | | | RSRV |
| 81 | SFCU | SCC SIX-IN-ONE CONTAINERS CO., S.A. | | | SCAC4 |
| 82 | SFCV | SERVCO FS COOPERATIVE INC | | | SCAC4 |
| 83 | SFCW | STATEWIDE FREIGHT INC | | | SCAC4 |
| 84 | SFCX | Sheffield Farms Co., Inc. | 7/1930-1/1950 | | NAKINA |
| 85 | SFCX | Southern Fertilizer and Chemical Co. | added 1/1955; 10/1957; eliminated 4/1958 | | NAKINA |
| 86 | SFCX | Safecar Railcar Service LLC | added 10/2003; eliminated 4/2004; 7/2005 (not listed) | | NAKINA |
| 87 | SFCX | Sheffield Farms Co., Inc. | Apr-38 | | NRHS |
| 88 | SFCX | Southern Fertilizer and Chemical Co. | Oct-57 | | NRHS |
| 89 | SFCX | *SOUTHERN FERLILIZER & CHEMICAL CO. [SHEFFIELD FARMS CO. INC.] | | | PWRC |
| 90 | SFCX | +SAFECAR RAILCAR SERVICE LLC | | | PWRC |
| 91 | SFCX | SAFECAR RAILCAR SERVICES LLC | | | SCAC4 |
| 92 | SFD | Speed Fly | Callsign: Draco, | E | AVCODES |
| 93 | SFD | SHOWA LINE, LTD. | | | PWRC |
| 94 | SFDE | SAFEWAY DELIVERY SERVICE INC | | | SCAC4 |
| 95 | SFDF | SMITH FAMILY TRUCKING INC | | | SCAC4 |
| 96 | SFDG | SEFFROOD, GREG TRUCKING | | | SCAC4 |
| 97 | SFDH | SOUTHERN FREIGHT TRANSPORTATION INC | | | SCAC4 |
| 98 | SFDJ | SE FREIGHT DE MEXICO SA DE | | | SCAC4 |
| 99 | SFDK | SAFIEDINE TRUCKING LLC | | | SCAC4 |
| 100 | SFDN | SERVICE FIRST DISTRIBUTION COMPANY | | | SCAC4 |
