| 301 | REIO | REEN EXPRESS | | | SCAC3 |
| 302 | REIP | REILING, SPUD | | | SCAC3 |
| 303 | REIP | REI TRANSPORT CORP | | | SCAC4 |
| 304 | REIR | REITSMA TRANSFER | | | SCAC3 |
| 305 | REIS | REIS BROS, INC | | | SCAC3 |
| 306 | REIT | REICHART TRANSFER | | | SCAC3 |
| 307 | REIT | REIMER, B TRUCKING LTD | | | SCAC4 |
| 308 | REIV | RICHARDS EXECUTIVE LIMOUSINE SERVIC | | | SCAC3 |
| 309 | REIV | RINAUDO ENTERPRISES INC | | | SCAC4 |
| 310 | REIW | REIDLINGER INC | | | SCAC3 |
| 311 | REIW | REIMER WELDING | | | SCAC4 |
| 312 | REIY | REI | | | SCAC4 |
| 313 | REJ | Imperial Airlines | Callsign: Long Tail, | GB | AVCODES |
| 314 | REJ | SA Airlink Regional (Pty) Ltd | Callsign: Regional Link, | ZA | AVCODES |
| 315 | REJ | SA Airlink Regional | | | ICAO1 |
| 316 | REJA | REESER, JAMES O | | | SCAC3 |
| 317 | REJE | REED, JOE TRUCKING | | | SCAC3 |
| 318 | REJH | REDDING, J H TRUCKING | | | SCAC3 |
| 319 | REJK | REJ TRUCKING CO INC | | | SCAC3 |
| 320 | REJK | REID, J K MANUFACTURING & SALES LTD | | | SCAC4 |
| 321 | REJP | REARDON, JOSEPH P | | | SCAC3 |
| 322 | REJS | RESSLER, JACK & SONS TRUCKING | | | SCAC3 |
| 323 | REJS | RESSLER, JIM TRUCKING INC | | | SCAC4 |
| 324 | REJT | REID, JERRY TRANSPORT LTD | | | SCAC3 |
| 325 | REK | Air Company Reem Air | IATA: V4, Designator V4* recalled by IATA | RUS | AVCODES |
| 326 | REK | Air Company Reem Air | Designator V4* recalled by IATA | RUS | AVCODES |
| 327 | REK | Reem Air | IATA: V4 | | ICAO1 |
| 328 | REKA | REKO TRUCKING EXPRESS INC | | | SCAC4 |
| 329 | REKC | RORAE EXPRESS TRUCKING INC | | | SCAC4 |
| 330 | REKE | REK EXPRESS INC | | | SCAC4 |
| 331 | REKG | R E T TRUCKING | | | SCAC3 |
| 332 | REKI | REK EXPRESS INC | | | SCAC4 |
| 333 | REKL | ROSE TRUCKING LLC | | | SCAC4 |
| 334 | REKN | REA TRUCKING | | | SCAC4 |
| 335 | REKO | REKO TOOL & MOULD | | | SCAC4 |
| 336 | REKQ | RENN-LINK LLC | | | SCAC4 |
| 337 | REKT | REX TRUCKING | | | SCAC3 |
| 338 | REKU | REKTOR LNG D.O.O. | | HR | BIC |
| 339 | REL | Reliance Aviation | Callsign: Reliance Air, | USA | AVCODES |
| 340 | REL | Rotterdam Airlines B.V. | IATA: RY, Callsign: Romeo Yankee, Ceased operations | NL | AVCODES |
| 341 | REL | Reliance Aviation | | | ICAO1 |
| 342 | REL | 2 Rail | | DE | VKM |
| 343 | RELA | RELIABLE AIR FREIGHT TRUCKING | | | SCAC3 |
| 344 | RELA | REICHERT, L A | | | SCAC4 |
| 345 | RELB | RELIABLE TRANSFER CORP | | | SCAC3 |
| 346 | RELC | RELOCATION SYSTEMS LLC | | | SCAC4 |
| 347 | RELD | REYNOLDS, MIKE TRUCKING COMPANY | | | SCAC3 |
| 348 | RELD | ROAD EX LOGISTICS INC | | | SCAC4 |
| 349 | RELF | RELIABLE TRANSFER CO | | | SCAC3 |
| 350 | RELF | REDPINE EXPRESS LLC | | | SCAC4 |
| 351 | RELG | REAL EXPRESS LOGISTICS GROUP | | | SCAC4 |
| 352 | RELI | RELOCATION ADVISORS INC | | | SCAC3 |
| 353 | RELI | RELIANCE EXPRESS INC | | | SCAC4 |
| 354 | RELJ | RK EXPRESS LLC | | | SCAC4 |
| 355 | RELK | REEFER EXPRESS LINES PTY | | | SCAC3 |
| 356 | RELM | RABEL LIMITED | | | SCAC3 |
| 357 | RELN | RETAIL LEASING CORPORATION | | | SCAC3 |
| 358 | RELOC | RELOC S.A. | | RO | VKM |
| 359 | RELP | REAL EXPRESS LOGISTICS GROUP SA DE | | | SCAC4 |
| 360 | RELQ | RELIABLE CARTAGE CO | | | SCAC3 |
| 361 | RELQ | ROCKPORT EXPRESS LLC | | | SCAC4 |
| 362 | RELR | RELIANT TRUCKING | | | SCAC3 |
| 363 | RELR | RC ENTERPRISE OF OHIO LLC | | | SCAC4 |
| 364 | RELT | RELIABLE TRANSPORTATION SPECIALISTS | | | SCAC4 |
| 365 | RELU | RINCHEM EQUIPMENT LEASING | | USA | BIC |
| 366 | RELW | REDLINE ENTERPRISES LLC | | | SCAC4 |
| 367 | RELX | Relco Tank Line, Inc. | added 10/1986; 1/1994-7/2005 | | NAKINA |
| 368 | RELX | Relco Tank Line Division of Relco Nevada Corp. | added 10/1976; 1/1980; eliminated 10/1986 | | NAKINA |
| 369 | RELX | Relco Tank Line, Inc. | added 1/1972; 1/1975; eliminated 10/1976 | | NAKINA |
| 370 | RELX | Relco Leasing Corp. | added 7/1969; 4/1970; eliminated 1/1972 | | NAKINA |
| 371 | RELX | Relco Leasing Corp. | added 7/69; 4/70; eliminated 1/72 | | NRHS |
| 372 | RELX | Relco Tank Line, Inc. | added 1/72; 1/75 | | NRHS |
| 373 | RELX | Relco Tank Line Division of Relco Nevada Corp. | 1/80; eliminated 10/86 | | NRHS |
| 374 | RELX | Relco Tank Line, Inc. | added 10/86; 1/94-7/2000 | | NRHS |
| 375 | RELX | (RTLX) RELCO TANK LINE INC. | | | PWRC |
| 376 | RELX | Relco Nevada Corporation | | | RSRV |
| 377 | RELX | RELCO TANK LINE INC | | | SCAC4 |
| 378 | RELY | RELIABLE CARTAGE CO | | | SCAC3 |
| 379 | RELY | RELY EXPRESS LINES INC | | | SCAC4 |
| 380 | RELZ | RELIABLE TRANSPORTATION SPECIALISTS | | | SCAC4 |
| 381 | REM | Riecam, S.A. | Callsign: Riecam, | HN | AVCODES |
| 382 | REM | C & M Aviation, Inc. | Callsign: Rem, | USA | AVCODES |
| 383 | REM | Rose Air Ltd. | Callsign: Rose, | BG | AVCODES |
| 384 | REM | | City: Remscheid | D | TRAFFIC |
| 385 | REMA | REED MACHINERY&TRANSPORTATION CO | | | SCAC3 |
| 386 | REMA | REED MACHINERY & TRANSPORTATION CO | | | SCAC4 |
| 387 | REMAT | REMAT S.A. | | RO | VKM |
| 388 | REMBC | REMAT SA | | RO | VKM |
| 389 | REMBV | REMAT SA | | RO | VKM |
| 390 | REMC | REMOTE ACCESS TECHNOLOGY | | | SCAC4 |
| 391 | REMD | REIMER, DEAN | | | SCAC4 |
| 392 | REME | REYNOLDS EMERGENCY EXPRESS | | | SCAC4 |
| 393 | REMF | REM TRUCKING TRANSPORTATION | | | SCAC4 |
| 394 | REMG | REMINGTON FREIGHT LINES | | | SCAC3 |
| 395 | REMH | R & E MANUFACTURING LLC | | | SCAC4 |
| 396 | REMJ | REYNOLDS, M J TRUCKING INC | | | SCAC3 |
| 397 | REMK | REMICK TRANSFER CO, INC | | | SCAC3 |
| 398 | REMK | RITTENHOUSE, M K & SONS LTD | | | SCAC4 |
| 399 | REML | REDMAN LIMITED | | | SCAC3 |
| 400 | REML | REMLAP D'OR FARM | | | SCAC4 |
