| 5301 | RKYR | ROCKY RIDGE TRUCKING INC | | | SCAC3 |
| 5302 | RKYS | ROCKYS CARTAGE INC | | | SCAC3 |
| 5303 | RKYT | ROCKY TOP TRUCKING INC | | | SCAC3 |
| 5304 | RL | CJSC Royal Flight Airlines | {ICAO: ABG, Callsign: Royal Flight, IATA Designator changed from 4R. Name changed from Joint Stock Company "Abakan-Avia" w.e.f. 11 July 2014.};SRCKEY=AVCODES | RUS | |
| 5305 | RL | Royal Phnom Penh Airways | ICAO: PPW, Callsign: Phnom-Penh Air, | K | AVCODES |
| 5306 | RL | Air Charter, Inc. | | PRI | AVCODES |
| 5307 | RL | Airworld Ltd. | ICAO: AWD, Callsign: Envoy, Merged into Flying Colours MT/FCL | GB | AVCODES |
| 5308 | RL | E.S. & A. Robinson (Holdings) Ltd. | | GB | AVCODES |
| 5309 | RL | Royal Falcon of Jordan | ICAO: RFJ, IATA Prefix: 372, IATA designator changed from RZ | JOR | AVCODES |
| 5310 | RL | Rutland Line, Inc. | 7/2000-7/2005 | | NAKINA |
| 5311 | RL | Rutland Line, Inc. | Jul-00 | | NRHS |
| 5312 | RL | RUTLAND LINE, INC. | | | PWRC |
| 5313 | RL | Rutland Line | | | RSRV |
| 5314 | RL | RUTLAND LINE INC | | | SCAC4 |
| 5315 | RL | Rutland Line | | USA | TRAFFIC |
| 5316 | RLA | Airlinair | IATA: A5, Callsign: Airlinair, Name changed to HOP!-Airlinair w.e.f. 31 March 2013. ICAO designator changed from ARF | F | AVCODES |
| 5317 | RLA | Hop!-Airlinair | IATA: A5, Callsign: Airlinair, Name changed from Airlinair w.e.f. 31 March 2013. ICAO designator changed from ARF | F | AVCODES |
| 5318 | RLA | LLC Rolema | Callsign: Rolema, Name changed to Tarp Aviation. | RUS | AVCODES |
| 5319 | RLA | Tarp Aviation | Callsign: Rolema, Name changed from LLC Rolema. | RUS | AVCODES |
| 5320 | RLA | Airlinair | IATA: A5 | | ICAO1 |
| 5321 | RLAA | RELATA, INC. | | | SCAC3 |
| 5322 | RLAB | RELIABLE TRUCKING | | | SCAC3 |
| 5323 | RLAC | RELIABLE CARRIERS INC | | | SCAC3 |
| 5324 | RLAC | R & L ACRES LTD | | | SCAC4 |
| 5325 | RLAD | RANCHLAND TRANSPORT LIMITED | | | SCAC3 |
| 5326 | RLAD | RANCHLAND TRANSPORT LTD | | | SCAC4 |
| 5327 | RLAE | R L A FREIGHT SYSTEMS | | | SCAC3 |
| 5328 | RLAE | RITE LINE TRANSPORT LTD | | | SCAC4 |
| 5329 | RLAF | R & L AGENCY TARIFF | | | SCAC3 |
| 5330 | RLAF | RELIANCE FABRICATIONS | | | SCAC4 |
| 5331 | RLAG | RaiLogistics AG | | CH | VKM |
| 5332 | RLAM | RANCHO LA MISION S A DE C V | | | SCAC4 |
| 5333 | RLAN | ROYAL AUTO RESCUE ENTERPRISES INC | | | SCAC3 |
| 5334 | RLAN | R G LUMBER CORP | | | SCAC4 |
| 5335 | RLAO | ROYAL ARROW COMPANY INC | | | SCAC3 |
| 5336 | RLAO | RED BULL TRANSPORT INC | | | SCAC4 |
| 5337 | RLAP | ROYAL APPLE SALES INC | | | SCAC3 |
| 5338 | RLAQ | ROYAL LINE TRANS INC | | | SCAC4 |
| 5339 | RLAR | ROLLA TRANSPORTATION | | | SCAC3 |
| 5340 | RLAR | ROBIN LAROCQUE TRANSPORT INC | | | SCAC4 |
| 5341 | RLAS | R O L TRANSPORTATION SERVICE | | | SCAC3 |
| 5342 | RLAT | RELAY TRANSFER INC | | | SCAC3 |
| 5343 | RLAU | AUSTRALIAN REEFER LEASING | | | SCAC3 |
| 5344 | RLAW | R & L AUTO MOVERS INC | | | SCAC4 |
| 5345 | RLAX | Rail Logix | | | RSRV |
| 5346 | RLB | Highland Airways | Callsign: Hiway, Name changed from Air Alba Limited | GB | AVCODES |
| 5347 | RLB | Air Alba Limited | IATA: 8R, Name changed to Highland Airways | GB | AVCODES |
| 5348 | RLB | Reliable Unique Services Aviation LLC | IATA: R6, Callsign: Reliable, IATA Prefix: 827, IATA designator changed to R4 | AM | AVCODES |
| 5349 | RLB | Reliable Unique Services Aviation LLC | IATA: R4, Callsign: Reliable, IATA Prefix: 827, IATA designator changed from R6* | AM | AVCODES |
| 5350 | RLB | Sunlight Express Airways t/a Sunlight Air | IATA: 2R, Callsign: Sunlight, | RP | AVCODES |
| 5351 | RLBA | RELLER TRANSPORT | | | SCAC4 |
| 5352 | RLBB | ROULOTTES LUPIEN TWO ZERO ZERO ZERO | | | SCAC4 |
| 5353 | RLBC | RELIABLE CHAUFFEURS | | | SCAC3 |
| 5354 | RLBC | ROMANA TRANSPORT LTD | | | SCAC4 |
| 5355 | RLBD | RLS TRUCKING INC | | | SCAC4 |
| 5356 | RLBE | RELIABLE EXPRESS | | | SCAC3 |
| 5357 | RLBG | ROETHLISBERGER, JOHN | | | SCAC3 |
| 5358 | RLBG | RELIABLE LOGISTICS INC | | | SCAC4 |
| 5359 | RLBK | RLB TRUCKING CORPORATION | | | SCAC3 |
| 5360 | RLBL | RELIABLE TRANSFER, INC | | | SCAC3 |
| 5361 | RLBM | RELIABLE MOVING INC | | | SCAC3 |
| 5362 | RLBM | RELIABLE MOVING & STORAGE | | | SCAC4 |
| 5363 | RLBN | R L B LEASING INC | | | SCAC3 |
| 5364 | RLBO | RELIABLE OIL CO INC | | | SCAC4 |
| 5365 | RLBP | RELIABLE TRANSPORT | | | SCAC4 |
| 5366 | RLBR | RELIABLE RESOURCES INC | | | SCAC3 |
| 5367 | RLBR | RLB FOOD DISTRIBUTORS | | | SCAC4 |
| 5368 | RLBS | RILLS BUS SERVICE | | | SCAC3 |
| 5369 | RLBS | RELIABLE TRANSPORTATION SERVICES LL | | | SCAC4 |
| 5370 | RLBT | RELIABLE TRANSPORTATION INC | | | SCAC4 |
| 5371 | RLBW | ROLANDS BONDED WAREHOUSE | | | SCAC3 |
| 5372 | RLC | Avial (Russian Company Limited) | Callsign: Rushair, | RUS | AVCODES |
| 5373 | RLC | Real Aeroclub de Lleida | | E | AVCODES |
| 5374 | RLC | ROYALTY COACH | | | SCAC4 |
| 5375 | RLC | railCare AG | | CH | VKM |
| 5376 | RLCC | ROLLINS CUSTOM CARRIERS INC | | | SCAC3 |
| 5377 | RLCC | RL TRUCKING ENTERPRISES | | | SCAC4 |
| 5378 | RLCD | RITE LINE TRANSPORTATION INC | | | SCAC4 |
| 5379 | RLCE | ROL CON EXPRESS | | | SCAC3 |
| 5380 | RLCE | RELIABLE CARRIERS INC | | | SCAC4 |
| 5381 | RLCF | RUAN LOGISTICS CORPORATION | | | SCAC4 |
| 5382 | RLCG | ROYAL CARRIAGE LTD | | | SCAC3 |
| 5383 | RLCI | RISEN LIMOUSINE & CITY DELIVERY | | | SCAC3 |
| 5384 | RLCI | RELIABLE CARRIER INC | | | SCAC4 |
| 5385 | RLCK | R L TRUCKING INC | | | SCAC3 |
| 5386 | RLCK | R L TRUCKING | | | SCAC4 |
| 5387 | RLCL | RAMSES LOGISTICS CO LTD | | | SCAC4 |
| 5388 | RLCM | ROLBAR LOGISTICS COMPANY | | | SCAC4 |
| 5389 | RLCN | ROBINCREST LANDSCAPING & CONSTRUCTI | | | SCAC3 |
| 5390 | RLCO | RLC TRANSPORTATION CO INC | | | SCAC3 |
| 5391 | RLCO | RUSSELL OIL COMPANY OF VIRGINIA INC | | | SCAC4 |
| 5392 | RLCP | RELIANCE TRANSPORT INC | | | SCAC4 |
| 5393 | RLCQ | R L CARTAGE | | | SCAC3 |
| 5394 | RLCQ | REMINGTON LAND & CATTLE | | | SCAC4 |
| 5395 | RLCU | DEFENCE CONTAINER MANAGEMENT SERVICE | | GB | BIC |
| 5396 | RLCU | ARCATRANS INC., LTD. | | | SCAC3 |
| 5397 | RLCU | DEFENCE CONTAINER MANAGEMENT SERVIC | | | SCAC4 |
| 5398 | RLCW | RYLAN LOGISTICS CORP | | | SCAC4 |
| 5399 | RLCX | ANDY INTERNATIONAL, INC. [ANDY EQUIPMENT, INC.] | | | PWRC |
| 5400 | RLCX | RELCO | | | RSRV |
