| 401 | RANI | RANDR TRUCK LINE | | | SCAC3 |
| 402 | RANJ | RANDOLPH, J GRADY | | | SCAC3 |
| 403 | RANJ | RAND, J B EXPRESS | | | SCAC4 |
| 404 | RANN | RANA TRANSPORT | | | SCAC4 |
| 405 | RANO | RANEYS TRUCKING | | | SCAC3 |
| 406 | RANO | RANDA TRANSPORT LTD | | | SCAC4 |
| 407 | RANP | RANPARR INC | | | SCAC4 |
| 408 | RANR | RAN TRANSPORTATION INC | | | SCAC4 |
| 409 | RANR | RandstadRail | | NL | TRAFFIC |
| 410 | RANS | RANDS TRANSPORT INC | | | SCAC3 |
| 411 | RANU | RABANCO COMPANIES | | | SCAC4 |
| 412 | RANW | RAINBOW TRUCKING | | | SCAC3 |
| 413 | RANX | Randolph Petroleum Co. | 8/1920 | | NAKINA |
| 414 | RANX | RANDOLPH PETROLEUM CO. | | | PWRC |
| 415 | RAO | Real Aerolub de Malaga | | E | AVCODES |
| 416 | RAOB | RODAS AUTO BODY | | | SCAC3 |
| 417 | RAOC | ROLAND AND ASSOCIATES TRANSPORT SER | | | SCAC3 |
| 418 | RAOH | RAMSON, HUGH L | | | SCAC3 |
| 419 | RAOM | R&O MOTOR AGENCIES TEXAS INC | | | SCAC3 |
| 420 | RAON | R A O TRANSPORTATION INC | | | SCAC4 |
| 421 | RAOQ | RADIO TRANSFER INC | | | SCAC3 |
| 422 | RAOR | RAMOS, ROBERT TRUCKING | | | SCAC3 |
| 423 | RAOS | RANIER OVERSEAS INC | | | SCAC3 |
| 424 | RAOT | RAMOS TRANSPORTATION | | | SCAC3 |
| 425 | RAOW | RED ARROW TRANSPORTATION | | | SCAC3 |
| 426 | RAOX | General American Transportation Corp. | 7/1937-4/1961; eliminated 10/1962 | | NAKINA |
| 427 | RAOX | Roberts & Oake, Inc. (General American Tank Car Corp.) | 7/1935 | | NAKINA |
| 428 | RAOX | Roberts & Oake, Inc. | 7/1930-7/1932 | | NAKINA |
| 429 | RAOX | Roberts & Oake | 8/1920-7/1923 | | NAKINA |
| 430 | RAOX | Roberts & Oake, Inc. (General American Transportation Corp.) | Apr-38 | | NRHS |
| 431 | RAOX | General American Transportation Corp. | 1/52-4/61 | | NRHS |
| 432 | RAOX | ROBERTS & OAKE, INC. (GENERAL AMERICAN TRANSPORTATION CORP.) | | | PWRC |
| 433 | RAP | Rapid Air | Callsign: Rapidair, | F | AVCODES |
| 434 | RAP | Air Center Helicopters, Inc. | Callsign: Reptor, | USA | AVCODES |
| 435 | RAP | Air Center Helicopters | | | ICAO1 |
| 436 | RAPA | RAPIDMEX | | | SCAC4 |
| 437 | RAPC | RAPID TRANSPORT COMPANY | | | SCAC4 |
| 438 | RAPD | RAPIDO TRANSFER INC | | | SCAC4 |
| 439 | RAPEC | Radomskie Przedsiębiorstwo Energetyki Cieplnej RADPEC S.A. | | PL | VKM |
| 440 | RAPF | RAPID FURNITURE TRANSPORT, INC | | | SCAC3 |
| 441 | RAPH | RAPID TRANSFER | | | SCAC3 |
| 442 | RAPH | RAYMOND-A-PREHEMO | | | SCAC4 |
| 443 | RAPI | R A P EXPRESS | | | SCAC3 |
| 444 | RAPI | RAPIDEX | | | SCAC4 |
| 445 | RAPID | Rapid-Bus s.c. | City: Warszawa | PL | TRAFFIC |
| 446 | RAPK | RAPIDO'S TRUCKING (MX-367093) | | | SCAC4 |
| 447 | RAPL | RALPHS TRANSPORT LTD | | | SCAC3 |
| 448 | RAPM | RAPPLEYE, DEAN INC | | | SCAC3 |
| 449 | RAPM | REYES AUTO PARTES SA DE CV | | | SCAC4 |
| 450 | RAPN | RAPP TRUCK SERVICE | | | SCAC3 |
| 451 | RAPO | R A SPECIALISTS INC | | | SCAC3 |
| 452 | RAPO | RAPOL INC | | | SCAC4 |
| 453 | RAPP | RAPP BROS PALLET SERVICE INC | | | SCAC4 |
| 454 | RAPQ | RAPID DISTRIBUTING CORP | | | SCAC3 |
| 455 | RAPR | RAPID ROBERTS INC | | | SCAC4 |
| 456 | RAPT | R A P TRUCKING INC | | | SCAC4 |
| 457 | RAPV | RAPID AIR DELIVERY | | | SCAC3 |
| 458 | RAPV | RAPID SERVICE INC | | | SCAC4 |
| 459 | RAPW | RAP LINES INC | | | SCAC3 |
| 460 | RAPX | Rapco Transportation Co. | added 10/1981; 1/1994; eliminated 4/2000; 7/2000 (not listed) | | NAKINA |
| 461 | RAPX | Rapco Transportation Co. | added 10/81; 1/94; eliminated 4/2000; 7/2000 | | NRHS |
| 462 | RAPX | RAPCO TRANSPORTATION CO. | | | PWRC |
| 463 | RAPX | Rapco Transportation | | | RSRV |
| 464 | RAPY | RAMPLEY TRANSPORT INC | | | SCAC3 |
| 465 | RAPZ | RAPCO ENERGY | | | PWRC |
| 466 | RAQ | Rath Aviaton | | | ICAO1 |
| 467 | RAQC | ROMANA LOGISTICS LLC | | | SCAC4 |
| 468 | RAQD | RARICKS QUICK DELIVERY | | | SCAC3 |
| 469 | RAQE | RACE LOGISTICS INC | | | SCAC4 |
| 470 | RAQO | RAYS LOCAL EXPRESS | | | SCAC3 |
| 471 | RAR | Rotation International Air Services | Callsign: Rotation Air, | ETH | AVCODES |
| 472 | RAR | Rotation International Air Services | IATA: GZ | | ICAO1 |
| 473 | RAR | RAR Eisenbahn Service AG | Ellwangen (>> HTRS Süd) | D | privat-bahn.de |
| 474 | RAR | RARITAN VALLEY BUS SERVICE | | | SCAC4 |
| 475 | RAR | Rent a Rail Eisenbahn-Service AG | | D | TRAFFIC |
| 476 | RAR | Rent-A-Rail Eisenbahn Service | | DE | VKM |
| 477 | RARA | RARITAN TRANSPORTATION SERVICES INC | | | SCAC3 |
| 478 | RARB | R & R TRUCKING INC | | | SCAC3 |
| 479 | RARD | RANTHUM TRUCKING INC | | | SCAC3 |
| 480 | RARD | RAMTHUN TRUCKING INC | | | SCAC4 |
| 481 | RARG | R AND R TRUCKING | | | SCAC3 |
| 482 | RARH | R A R EXPRESS INC | | | SCAC3 |
| 483 | RARI | R & R TRUCKING CO | | | SCAC3 |
| 484 | RARL | R AND R TRUCK LINE | | | SCAC3 |
| 485 | RARM | RARITAN MOTOR LINES, INC | | | SCAC3 |
| 486 | RARN | R & R TRUCKING | | | SCAC3 |
| 487 | RARO | R & R DELIVERY | | | SCAC3 |
| 488 | RARO | RIGS AROLLING LLC | | | SCAC4 |
| 489 | RARP | R & R TRANSPORTATION INC | | | SCAC3 |
| 490 | RARQ | RAMROD FAST FREIGHT | | | SCAC3 |
| 491 | RART | RUSTIC ARTS | | | SCAC4 |
| 492 | RARV | R A R SERVICES INC | | | SCAC3 |
| 493 | RARV | Raritan Valley Bus Service | | US-NJ | TRAFFIC |
| 494 | RARW | Rarus Ry. Co. | added 7/1985; 1/1994-7/2005 | | NAKINA |
| 495 | RARW | Rarus Ry. Co. | 1/94-7/2000 | | NRHS |
| 496 | RARW | RARUS RAILWAY COMPANY | | | PWRC |
| 497 | RARW | Rarus Railway | | | RSRV |
| 498 | RARW | RARUS RAILWAY COMPANY | | | SCAC3 |
| 499 | RARY | R & R AUTO TRANSPORT | | | SCAC3 |
| 500 | RAS | Jim Ratliff Air Service.Inc. d/b/a RAS | Callsign: Shanhil, | USA | AVCODES |
