| 3201 | SEWP | SUPERIOR ENGINEERED WOOD PRODUCTS | | | SCAC4 |
| 3202 | SEWW | SOUTH EAST WORLD WIDE LTD | | | SCAC4 |
| 3203 | SEWY | SEAWAY EXPRESS INC | | | SCAC4 |
| 3204 | SEXB | SOUTHERN EXPRESS BROKERS | | | SCAC4 |
| 3205 | SEXE | SEED-EX EXPRESS INC | | | SCAC4 |
| 3206 | SEXG | STEEL EXPRESS LOGISTICS LLC | | | SCAC4 |
| 3207 | SEXJ | SEAL EXPRESS LLC | | | SCAC4 |
| 3208 | SEXL | SCOTT EXPRESS LLC | | | SCAC4 |
| 3209 | SEXM | SAFARI EXPRESS | | | SCAC4 |
| 3210 | SEXO | SEXTON OIL CO | | | SCAC4 |
| 3211 | SEXP | SANCHOTENA EXPRESS | | | SCAC4 |
| 3212 | SEXR | SOONER DISTRIBUTION SERVICES INC | | | SCAC4 |
| 3213 | SEXU | CONTAINER NORWAY AS | | N | BIC |
| 3214 | SEXU | TRAILER TRECK TRANSPORTATIONS | | | SCAC3 |
| 3215 | SEXU | CONTAINER NORWAY AS | | | SCAC4 |
| 3216 | SEXV | SHORELINE EXPRESS COURIER SERVICES | | | SCAC4 |
| 3217 | SEY | Air Seychelles Limited | IATA: HM, Callsign: Seychelles, IATA Prefix: 061, | SY | AVCODES |
| 3218 | SEY | Air Seychelles | IATA: HM | | ICAO1 |
| 3219 | SEYC | SEAY CORPORATION | | | SCAC4 |
| 3220 | SEYE | SEMO EXPRESS LOGISTICS LLC | | | SCAC4 |
| 3221 | SEYI | SHACKLEFORD ENERGY INC | | | SCAC4 |
| 3222 | SEYM | SEYM | | | SCAC4 |
| 3223 | SEYO | SEIYO SHIPPING COMPANY LTD | | | SCAC4 |
| 3224 | SEYQ | SERVRITE TRANSYSTEM INC | | | SCAC4 |
| 3225 | SEYS | STERRY STREET AUTO SALES INC | | | SCAC4 |
| 3226 | SEYT | STEEL CITY TRANSPORT | | | SCAC4 |
| 3227 | SEYU | SEYCHELLES PETROLEUM COMPANY LTD | | SY | BIC |
| 3228 | SEYU | SEYCHELLES PETROLEUM COMPANY LTD | | | SCAC4 |
| 3229 | SEZ | Servicio Especializado de Carga Aerea (SEC) | Callsign: Sec-Cargo, Ceased operations. | CO | AVCODES |
| 3230 | SEZ | Spiez-Erlenbach-Zweisimmen-Bahn | | CH | TRAFFIC |
| 3231 | SEZC | SILENCE LINES LLC | | | SCAC4 |
| 3232 | SEZE | STAR ENTERPRIZE INC | | | SCAC4 |
| 3233 | SEZI | STEELTEC TRANSPORT INC | | | SCAC4 |
| 3234 | SEZM | SEIM5 | | | SCAC4 |
| 3235 | SF | Tassili Airlines | ICAO: DTH, Callsign: Tassili Air, | DZ | AVCODES |
| 3236 | SF | Air Charter | ICAO: ACF, Callsign: Air Charter, Merged into Air France | F | AVCODES |
| 3237 | SF | Shanghai Airlines | ICAO: CSH, Callsign: Shanghai Air, IATA designator changed to FM | PRC | AVCODES |
| 3238 | SF | Société Aerienne Francaise d'Affretements | | F | AVCODES |
| 3239 | SF | Societe Air Charter SAFA | ICAO: ACF, Name changed to Air Charter | F | AVCODES |
| 3240 | SF | STEAMTOWN FOUNDATION | | | PWRC |
| 3241 | SF | SWARTHOUT COACHES INC | | | SCAC4 |
| 3242 | SF | | City: San Francisco | USA | TRAFFIC |
| 3243 | SFA | Aerotransportes Entre Rios Srl | Callsign: Aersa, Designator RS recalled by IATA | RA | AVCODES |
| 3244 | SFA | Cirus Aero | Callsign: Sfera, | MD | AVCODES |
| 3245 | SFA | Aerotransportes Entre Rios Srl | IATA: RS, Callsign: Aersa, Designator RS recalled by IATA | RA | AVCODES |
| 3246 | SFA | Sefa | Callsign: Sefa, Name changed to ENAC. | F | AVCODES |
| 3247 | SFA | ENAC | Callsign: Sefa, ICAO designator changed to NAK. Name changed from Sefa | F | AVCODES |
| 3248 | SFA | SEFA | | | ICAO1 |
| 3249 | SFA | SOUTHERN FREIGHT ASSOCIATION - TCAM ID | | | PWRC |
| 3250 | SFAB | SILVER FOX TRANSPORTATION | | | SCAC4 |
| 3251 | SFAD | S F ADVANCE TRANSPORTATION SERVICES | | | SCAC4 |
| 3252 | SFAF | SHORT FUSE TRUCKING INC | | | SCAC4 |
| 3253 | SFAL | SF&L Ry., Inc. | 1/1994-7/2005 | | NAKINA |
| 3254 | SFAL | SF&L Ry., Inc. | 1/94-7/2000 | | NRHS |
| 3255 | SFAL | SF&L RAILWAY, INC. | | | PWRC |
| 3256 | SFAL | SF and L Railway | | | RSRV |
| 3257 | SFAL | SF&L RAILWAY INC | | | SCAC4 |
| 3258 | SFAO | SHAN FREIGHTWAY | | | SCAC4 |
| 3259 | SFAP | SELF, AMANDA HORSE TRAINING | | | SCAC4 |
| 3260 | SFAP | SF Airporter | | US-CA | TRAFFIC |
| 3261 | SFAQ | SF BOOT BRUSH ENTERPRISES | | | SCAC4 |
| 3262 | SFAT | ST CANUT FARMS | | | SCAC4 |
| 3263 | SFAU | SCANDINAVIAN FERRY TRAILERS*AS | | | SCAC4 |
| 3264 | SFAW | S F SYSTEMS LTD | | | SCAC4 |
| 3265 | SFAY | SAFEWAY TRANSPORTATION | | | SCAC4 |
| 3266 | SFAZ | SUN FLOWER ARMY AMMUNITION PLANTS | | | PWRC |
| 3267 | SFB | Air Sofia | IATA: CT, Callsign: Air Sofia, IATA Prefix: 551, Closed down by Bulgarian Authorites on 05 March 2007. | BG | AVCODES |
| 3268 | SFB | His Majesty The Sultan's Flight | | BRU | AVCODES |
| 3269 | SFB | Air Sofia | | | ICAO1 |
| 3270 | SFB | Svendborg - Fåborg Banen | 1916 - 1954 | DK | jernbanen.dk |
| 3271 | SFB | San Francisco Belt | 1/1994 | | NAKINA |
| 3272 | SFB | San Francisco Belt | Jan-94 | | NRHS |
| 3273 | SFB | *RETIRED 04-20-93 ATP (0688) | | | PWRC |
| 3274 | SFB | *SAN FRANCISCO BELT RAILROAD | | | PWRC |
| 3275 | SFB | SAN FRANCISCO BAY RAILROAD | | | SCAC4 |
| 3276 | SFB | Strada Ferrata di Biella, Biella-Santhiá | | I | TRAFFIC |
| 3277 | SFBC | SPARTAN FREIGHT SYSTEMS INC | | | SCAC4 |
| 3278 | SFBD | SOUTH FLORIDA FRUIT AND | | | SCAC4 |
| 3279 | SFBD | Svendborg - Fåborg Banen | Real: SFB, 1916 - 1954 | DK | TRAFFIC |
| 3280 | SFBE | SHIFFLET BROTHERS ENTERPRISES, INC | | | SCAC1 |
| 3281 | SFBE | SHIFFLET BROTHERS ENTERPRISES INC | | | SCAC4 |
| 3282 | SFBF | SANDERSON FARMS | | | SCAC4 |
| 3283 | SFBG | SAMSON FUEL & TRUCKING | | | SCAC4 |
| 3284 | SFBH | SUGAR FOODS CORP | | | SCAC4 |
| 3285 | SFBI | SOVEREIGN FREIGHT BROKERS INC | | | SCAC4 |
| 3286 | SFBJ | STOFFEL, BRIAN J TRUCKING | | | SCAC4 |
| 3287 | SFBK | SOUTH FLORIDA BAKERY INC | | | SCAC4 |
| 3288 | SFBM | STRAWN FARMS LC | | | SCAC4 |
| 3289 | SFBN | SHAMROCK FREIGHT BROKERS INC | | | SCAC4 |
| 3290 | SFBO | STAFFORD FREIGHT SYSTEMS INC | | | SCAC4 |
| 3291 | SFBP | SCHAFER, BERNARD PETROLEUM INC | | | SCAC4 |
| 3292 | SFBQ | SHUFFLEBOX TRANSPORTATION LLC | | | SCAC4 |
| 3293 | SFBR | SAN FRANCISCO BELT RAILROAD | | | PWRC |
| 3294 | SFBS | STARS FERRY TRANSPORT INC | | | SCAC4 |
| 3295 | SFBU | SOLVAY FLUOR GMBH | | D | BIC |
| 3296 | SFC | Shuswap Air | Callsign: Shuswap, Designator 3S recalled by IATA | CDN | AVCODES |
| 3297 | SFC | Shuswap Air | IATA: 3S, Callsign: Shuswap, Designator 3S recalled by IATA | CDN | AVCODES |
| 3298 | SFC | Shuswap Flight Centre | | | ICAO1 |
| 3299 | SFCB | SAVANNAH FOOD COMPANY | | | SCAC4 |
| 3300 | SFCD | SIX FOUR ZERO SEVEN SIX NINE TWO (6 | | | SCAC4 |
