| 201 | SADI | SERVICIOS ADINTRA SA DE CV | | | SCAC4 |
| 202 | SADJ | SANDY RIDGE RANCH | | | SCAC4 |
| 203 | SADKDS | Slovenská autobusová doprava Košická dopravná spoločnosť | | SK | TRAFFIC |
| 204 | SADLM | Slovenskej Autobusovej Dopravy Liptovský Mikuláš | | SK | TRAFFIC |
| 205 | SADN | SAM-SON DISTRIBUTION CENTER, INC | | | SCAC1 |
| 206 | SADNR | SAD Nitra | | SK | TRAFFIC |
| 207 | SADP | SADLER OIL CO | | | SCAC4 |
| 208 | SADPD | SAD Prievidza | | SK | TRAFFIC |
| 209 | SADPN | SAD Piešťany | | SK | TRAFFIC |
| 210 | SADPP | SAD Poprad-Tatry | | SK | TRAFFIC |
| 211 | SADRT | Saddle River Tours | | US-NJ | TRAFFIC |
| 212 | SADS | STARRETT SERVICE INC | | | SCAC4 |
| 213 | SADSNV | SAD Spišská Nová Ves | | SK | TRAFFIC |
| 214 | SADT | SEVANA EXPEDITED SERVICES INC | | | SCAC4 |
| 215 | SADTN | SAD Trenčín | | SK | TRAFFIC |
| 216 | SADTR | SAD Trnava | | SK | TRAFFIC |
| 217 | SADTRN | SAD Trnava | | SK | TRAFFIC |
| 218 | SADZI | SAD Žilina | | SK | TRAFFIC |
| 219 | SADZV | SAD Zvolen | | SK | TRAFFIC |
| 220 | SAE | Tamara (Tana & Mara Aviation) | Callsign: Tamara, | EAK | AVCODES |
| 221 | SAE | Sampoerna Air Nusantara, PT. | Callsign: Sampoerna, | RI | AVCODES |
| 222 | SAED | Sächsischen Dampfbahngesellschaft | | D | TRAFFIC |
| 223 | SAEE | SEACARRIERS | | | SCAC4 |
| 224 | SAEN | SAENS AUTO PARTES | | | SCAC4 |
| 225 | SAEQ | SUPERIOR FUEL COMPANY | | | SCAC4 |
| 226 | SAER | Societá Anonima Esercizi Riuniti | | I | TRAFFIC |
| 227 | SAET | SUSTAITA ENTERPRISES LLC | | | SCAC4 |
| 228 | SAETA | Sociedad Ecuatoriana de Transporles Aereos (SAETA), S.A. | Real: SET | EC | TRAFFIC |
| 229 | SAEU | EDF DCN | | F | BIC |
| 230 | SAEU | EDF | | | SCAC4 |
| 231 | SAEW | SHARPES AUTO SALVAGE LTD | | | SCAC4 |
| 232 | SAF | Republic Of Singapore Air Force | Callsign: Singa, | SGP | AVCODES |
| 233 | SAF | Republic of Singapore Air Force | | | ICAO1 |
| 234 | SAF | SAFETY BUS SERVICE | | | SCAC4 |
| 235 | SAFA | SAFARI FREIGHT INC | | | SCAC4 |
| 236 | SAFB | SAFETY BATH INC | | | SCAC4 |
| 237 | SAFD | SEA AIR FREIGHT DISTRIBUTION SERVIC | | | SCAC4 |
| 238 | SAFE | S A F E TRANSPORTATION | | | SCAC4 |
| 239 | SAFETY | Safety Tours | | US-NJ | TRAFFIC |
| 240 | SAFG | SUPERIOR AUTO TRANSPORT | | | SCAC4 |
| 241 | SAFG | Safeguard Coaches | | GB | TRAFFIC |
| 242 | SAFI | SAVAGE FARMS INC | | | SCAC4 |
| 243 | SAFK | SAFEWORKS | | | SCAC4 |
| 244 | SAFL | SAFETY-KLEEN CANADA INC | | | SCAC4 |
| 245 | SAFM | SAFMARINE | | | SCAC1 |
| 246 | SAFM | SAFMARINE CONTAINER LINES ( | | | SCAC4 |
| 247 | SAFN | SATURN ACADEMY | | | SCAC4 |
| 248 | SAFP | SAFE TRANSPORTATION SERVICES INC | | | SCAC4 |
| 249 | SAFQ | SAFFRON TRUCKING INC | | | SCAC4 |
| 250 | SAFR | SAFE TRANSPORTATION | | | SCAC4 |
| 251 | SAFU | SOTRAFER SARL | | ZRE | BIC |
| 252 | SAFU | SAFBANK LINE LTD. | | | SCAC1 |
| 253 | SAFV | SAFEWAY VAN LINES OF WAYNESVILLE IN | | | SCAC4 |
| 254 | SAFX | Safety-Kleen Corp. | added 4/1997; 7/2000; 7/2005 (not listed) | | NAKINA |
| 255 | SAFX | Safety-Kleen Corp. | added 4/97; 7/2000 | | NRHS |
| 256 | SAFX | SAFETY-KLEEN CORPORATION | | | PWRC |
| 257 | SAFX | Safety-Kleen Corporation | | | RSRV |
| 258 | SAFZ | SAVANNAH FOOD | | | PWRC |
| 259 | SAG | SOS Flygambulans AS | Callsign: Medical Air, | S | AVCODES |
| 260 | SAG | China Southern Airline General Aviation Limited | Callsign: Aero Eagle, | PRC | AVCODES |
| 261 | SAG | SOS Flygambulans | | | ICAO1 |
| 262 | SAG | Sagami Railway Co. | | J | TRAFFIC |
| 263 | SAG | SAG GmbH GB Services | | DE | VKM |
| 264 | SAGB | SCHORNO AGRI-BUSINESS INC | | | SCAC4 |
| 265 | SAGD | STS AIR CARGO INC | | | SCAC4 |
| 266 | SAGE | SAGAMORE EXPRESS INC | | | SCAC4 |
| 267 | SAGF | SPECTRE AIR & GROUND FREIGHT INC | | | SCAC4 |
| 268 | SAGG | SUN AIR FREIGHT TRUCKING | | | SCAC4 |
| 269 | SAGH | S & A LOGISTICS INC | | | SCAC4 |
| 270 | SAGI | SOUTHPORT AGENCIES INC | | | SCAC4 |
| 271 | SAGJ | SAGA FREIGHT LOGISITICS LLC | | | SCAC4 |
| 272 | SAGK | SAMMONS LOGISTICS | | | SCAC4 |
| 273 | SAGN | SAGA (U S A) INC. | | | SCAC4 |
| 274 | SAGO | SUPERIOR AIR CARGO INC | | | SCAC4 |
| 275 | SAGP | ST ANN GROUP INC | | | SCAC4 |
| 276 | SAGQ | SOUTHERN AG CARRIERS INC | | | SCAC4 |
| 277 | SAGS | SUPERIOR AG RESOURCES COOPERATIVE I | | | SCAC4 |
| 278 | SAGT | SAGINAW TRANSFER CO INC | | | PWRC |
| 279 | SAGU | SAUDI INDUSTRIAL GAS COMPANY LTD | | | SCAC4 |
| 280 | SAGW | SAVAGE SWEETS INC | | | SCAC4 |
| 281 | SAGX | The Smith Agricultural Chemical Co. | 8/1920-4/1947 | | NAKINA |
| 282 | SAGX | The Smith Agricultural Chemical Co. | Apr-38 | | NRHS |
| 283 | SAGX | SMITH AGRICULTURAL CHEMICAL CO. | | | PWRC |
| 284 | SAGZ | SAGINAW MILL | | | PWRC |
| 285 | SAH | Sayakhat Airlines | IATA: W7, Callsign: Sayakhat, IATA Prefix: 271, Ceased operations in 2005. IATA Designator changed from W7* | KZ | AVCODES |
| 286 | SAH | Sayakhat Airlines | IATA: W7, Callsign: Sayakhat, IATA Designator changed to W7 | KZ | AVCODES |
| 287 | SAH | Smart Aero Solutions | Callsign: Smart Jet, Name changed to Smart Jet Sp. Z o.o. | PL | AVCODES |
| 288 | SAH | Smart Jet Sp. Z o.o. | Callsign: Smart Jet, Name changed from Smart Aero Solutions | PL | AVCODES |
| 289 | SAH | Sayakhat Airlines | | | ICAO1 |
| 290 | SAHB | SOUTHEAST ALASKA LIGHTERAGE | | | SCAC4 |
| 291 | SAHC | SULLIVAN ASPHALT & CONSTRUCTION CO | | | SCAC4 |
| 292 | SAHF | SEASTAR SHIPPING LTD | | | SCAC4 |
| 293 | SAHG | SAN ANGELO TRANSFER CO | | | SCAC4 |
| 294 | SAHI | SAHISA TRANSPORTES SA DE CV | | | SCAC4 |
| 295 | SAHJ | S A T LOGISTICS | | | SCAC4 |
| 296 | SAHM | SACHS CHEMICAL INC | | | SCAC4 |
| 297 | SAHN | SAHIN INTERNATIONAL INCORPORATION | | | SCAC4 |
| 298 | SAHO | S & A TRANSPORTATION | | | SCAC4 |
| 299 | SAHP | SAM HILL TRANSPORT CORP | | | SCAC4 |
| 300 | SAHQ | STREAMLINE LOGISTICS | | | SCAC4 |
