| 401 | REMM | R E M TRANSPORT LTD | | | SCAC3 |
| 402 | REMMG | REMAT MG SA | | RO | VKM |
| 403 | REMN | RE EM TRANSPORTATION SERVICES LTD | | | SCAC4 |
| 404 | REMO | REDMAN MOVING & STORAGE | | | SCAC3 |
| 405 | REMO | REMORQUAGE ST MICHEL INC | | | SCAC4 |
| 406 | REMP | REAM TRANSPORT INC | | | SCAC3 |
| 407 | REMP | REM ENTERPRISES INC | | | SCAC4 |
| 408 | REMS | RACERS EDGE MOTORSPORTS INC | | | SCAC4 |
| 409 | REMT | REMINGTON TRUCKING | | | SCAC3 |
| 410 | REMU | AMERICAN MARITIME AGENCIES INC. | | | SCAC3 |
| 411 | REMU | AMERICAN MARITIME AGENCIES INC. | | | SCAC4 |
| 412 | REMW | R E M TRUCKING CO INC | | | SCAC3 |
| 413 | REMW | REMWAN CARRIERS LTD | | | SCAC4 |
| 414 | REMX | R.E.M.X. Corp. | added 1/1980; 1/1980; eliminated 5/1983 | | NAKINA |
| 415 | REMX | R.E.M.X. Corp. | added 1/80; 1/80; eliminated 5/83 | | NRHS |
| 416 | REMX | R.E.M.X. CORP. | | | PWRC |
| 417 | REMX | R.E.M.X. Corp. | | USA | TRAFFIC |
| 418 | REMY | REMY MOVING & STORAGE CORP | | | SCAC3 |
| 419 | REMY | REM-TRONICS INC | | | SCAC4 |
| 420 | REMZ | RESOURCE MINE | | | PWRC |
| 421 | REN | Aero-Rent, S.A. de C.V. | Callsign: Aerorent, | MEX | AVCODES |
| 422 | REN | Arena Aviation Limited | Callsign: Arena, | GB | AVCODES |
| 423 | REN | Aero-Rent | | | ICAO1 |
| 424 | RENAULT | Renault | | F | TRAFFIC |
| 425 | RENB | ROSELLINI, BRUNO | | | SCAC3 |
| 426 | REND | RENDA SHIPPING COMPANY LTD VALLETTA | | | SCAC3 |
| 427 | REND | RENDON TRUCKING INC | | | SCAC4 |
| 428 | RENE | RENNERS EXPRESS INC | | | PWRC |
| 429 | RENE | RENNIES INC | | | SCAC4 |
| 430 | RENF | RENFRO CORPORATION | | | SCAC4 |
| 431 | RENFE | Red Nacional de los Ferrocarriles Españoles | | ES | VKM |
| 432 | RENH | REFRIGERADOS ENRIQUEZ | | | SCAC4 |
| 433 | RENI | REINERT, HAROLD, INC | | | SCAC3 |
| 434 | RENI | REINERT, HAROLD INC | | | SCAC4 |
| 435 | RENJ | RENEAU, JAMES SEED CO | | | SCAC3 |
| 436 | RENK | RENK TRUCKING INC | | | SCAC3 |
| 437 | RENM | REYNOLDS, MARLIN L | | | SCAC3 |
| 438 | RENN | RENN, R J SONS INC | | | SCAC3 |
| 439 | RENN | RENNER TRUCKING | | | SCAC4 |
| 440 | RENN | Rennsteigbahn | Real: RBG | D | TRAFFIC |
| 441 | RENO | REANN DISTRIBUTION | | | SCAC3 |
| 442 | RENOWN | Renown Bus Company | City: London | GB | TRAFFIC |
| 443 | RENP | REALCO ENTERPRISES INC | | | SCAC3 |
| 444 | RENQ | RENUS LOGISTICS PTE LTD | | | SCAC4 |
| 445 | RENS | RENO, SAMUEL | | | SCAC3 |
| 446 | RENS | REPUBLIC ENVIRONMENTAL SYSTEMS (TRA | | | SCAC4 |
| 447 | RENT | RENN TRANSPORTATION CO INC | | | SCAC3 |
| 448 | RENT | RENOLDS TRANSPORT | | | SCAC4 |
| 449 | RENTR | RENTRANS CARGO SP. Z O.O. | | PL | VKM |
| 450 | RENU | RENEWABLE CARBON MANAGEMENT LLC | | | SCAC4 |
| 451 | RENX | RENKERT OIL LLC | | | PWRC |
| 452 | RENX | RENKERT OIL LLC | | | SCAC4 |
| 453 | RENY | REGAL ENTERPRISES | | | SCAC4 |
| 454 | REO | Rio Airways | Callsign: Rio, | USA | AVCODES |
| 455 | REO | Rio Airways | | | ICAO1 |
| 456 | REOB | RECTOR, B & SONS TRUCKING | | | SCAC3 |
| 457 | REOD | REDERIET OTTO DANIELSEN | | | SCAC3 |
| 458 | REOE | REYNOLDS EXPRESS INC | | | SCAC3 |
| 459 | REOF | RELIANT TRUCKING COMPANY | | | SCAC3 |
| 460 | REOL | Reolian Public Transport Co. | The company was a joint venture between Veolia Transport RATP Asia (VTRA) and a company in Macau, the HN Group.[1] It was declared bankrupt by the Macau judiciary on December 4, 2013. | | TRAFFIC |
| 461 | REOM | REO MOVERS & VAN LINES, INC | | | SCAC3 |
| 462 | REOM | REO MOVERS & VAN LINES INC | | | SCAC4 |
| 463 | REON | REON TRANSPORTATION | | | SCAC3 |
| 464 | REON | REONIAT LLC | | | SCAC4 |
| 465 | REOO | REO TRANSPORTATION | | | SCAC3 |
| 466 | REOP | R E AUTO TRANSPORTERS | | | SCAC3 |
| 467 | REOP | REDCO TRANSPORT LTD | | | SCAC4 |
| 468 | REOR | REM TRANSPORT | | | SCAC3 |
| 469 | REOS | RESOURCE TECHNOLOGY SERVICES INC | | | SCAC3 |
| 470 | REOT | REGIONAL EXPEDITE LTD (SUBSIDIARY O | | | SCAC4 |
| 471 | REP | Rep Trans Avia Ltd. | Callsign: Reptrans, | UA | AVCODES |
| 472 | REP | Republic Airlines | IATA: RC, Merged into Northwest Airlines | USA | AVCODES |
| 473 | REP | Aero Regional Paraguaya S.A. | IATA: P7, Callsign: Regiopar, Name changed to Aero Sur Paraguay S.A. ICAO designator changed to AES. | PY | AVCODES |
| 474 | REPA | REPUBLIC LOGISTIC SERVICES | | | SCAC4 |
| 475 | REPC | REPCO | | | SCAC3 |
| 476 | REPD | REPP, DAVID | | | SCAC3 |
| 477 | REPE | REPUBLIC EXPRESS INC | | | SCAC3 |
| 478 | REPE | REPUBLIC EXPRESS INC | | | SCAC4 |
| 479 | REPG | REPUBLIC GYPSUM COMPANY | | | SCAC3 |
| 480 | REPG | REF PRINTING | | | SCAC4 |
| 481 | REPJ | RED EYE ENTERPRISES INC | | | SCAC3 |
| 482 | REPK | READY-PACK INC | | | SCAC3 |
| 483 | REPL | REPLOGLE TRANSPORT COMPANY | | | SCAC3 |
| 484 | REPM | R E P TRUCKING | | | SCAC3 |
| 485 | REPN | R E T INC | | | SCAC3 |
| 486 | REPO | REPUBLIC VAN & STORAGE OF ORANGE CO | | | SCAC3 |
| 487 | REPR | RENCH ENTERPRISES INC | | | SCAC3 |
| 488 | REPS | REPSHER, CARLTON | | | SCAC3 |
| 489 | REPT | RELIABLE PRODUCT TRANSPORT | | | SCAC3 |
| 490 | REPT | RELIABLE PRODUCT TRANSPORT | | | SCAC4 |
| 491 | REPT | Reptons Coaches | | GB | TRAFFIC |
| 492 | REPU | REPUBLIC MARINE LINES INC. | | | SCAC3 |
| 493 | REPV | REPUBLIC VAN LINES OF SAN DIEGO, INC | | | SCAC3 |
| 494 | REPX | Reliable Packing Co. | added 7/1953; 7/1954-4/1961; eliminated 10/1963 | | NAKINA |
| 495 | REPX | Mid-West Despatch Car Co. (Reserve Petroleum Co.) | 7/1937-1/1941 | | NAKINA |
| 496 | REPX | Reserve Development Co. | 7/1935 | | NAKINA |
| 497 | REPX | Reserve Petroleum Co. | 7/1930-7/1932 | | NAKINA |
| 498 | REPX | Mid-West Despatch Car Co. | Apr-38 | | NRHS |
| 499 | REPX | Reliable Packing Co. | 10/57-4/61 | | NRHS |
| 500 | REPX | *RESERVE PETROLEUM CO. (MID-WEST DESPATCH CAR CO.) | | | PWRC |
