| 1 | RA | Nepal Airlines Corporation t/a Royal Nepal Airlines | ICAO: RNA, Callsign: Royal Nepal, IATA Prefix: 285, Name changed to Nepal Airlines Corporation. Founded on 01 July 1958. Designator RA reinstated by IATA | NEP | AVCODES |
| 2 | RA | Nepal Airlines Corporation t/a Nepal Airlines | ICAO: RNA, Callsign: Royal Nepal, IATA Prefix: 285, Name changed from Royal Nepal Airlines Corporation. Founded in 1958. Designator RA reinstated by IATA | NEP | AVCODES |
| 3 | RA | Red Army - Sovietunion | | SU | TRAFFIC |
| 4 | RA | REGIONALPS SA | | CH | VKM |
| 5 | RAA | Rynes Aviation, Inc. | Callsign: Rynes Aviation, | USA | AVCODES |
| 6 | RAA | Rynes Aviation | | | ICAO1 |
| 7 | RAAA | RAMIREZ, ALMA ANGELINA | | | SCAC4 |
| 8 | RAAF | RAPID AIR FREIGHT, INC | | | SCAC3 |
| 9 | RAAF | Royal Australian Air Force | | AUS | TRAFFIC |
| 10 | RAAK | RANGER TRUCKLINES INC | | | SCAC4 |
| 11 | RAAM | RAASCH, MICHAEL | | | SCAC3 |
| 12 | RAAR | RACING JLM TRANSPORT | | | SCAC4 |
| 13 | RAAS | RAMEYS AUTO SALES INC | | | SCAC3 |
| 14 | RAAT | ROAASTS TRUCKING INC | | | SCAC3 |
| 15 | RAB | Rila Airlines, Joint Stock Company | Callsign: Rila, | BG | AVCODES |
| 16 | RAB | Rayyan Air Pvt. Ltd. | Callsign: Rayyan International, Shutdown during 2014. Assets transferred to AHS Air International. | PK | AVCODES |
| 17 | RAB | DB ZugBus Regionalverkehr Alb-Bodensee | | D | TRAFFIC |
| 18 | RABA | RAB RACING LLC | | | SCAC4 |
| 19 | RABB | RAY, BOBBY TRUCKING | | | SCAC3 |
| 20 | RABB | RAY, BOBBY TRUCKING LC | | | SCAC4 |
| 21 | RABC | RABAS, CHAD EXPRESS INC | | | SCAC4 |
| 22 | RABD | REIS AUTO BODY | | | SCAC3 |
| 23 | RABD | RAJ FREIGHT SYSTEMS LTD | | | SCAC4 |
| 24 | RABE | RABE TRUCKING | | | SCAC3 |
| 25 | RABG | RADIUS LOGISTICS | | | SCAC4 |
| 26 | RABI | RED ARROW BONDED MESSENGER CORP | | | SCAC3 |
| 27 | RABK | RAZORBACK EXPRESS INC | | | SCAC3 |
| 28 | RABL | RABEL, EDWARD | | | SCAC3 |
| 29 | RABN | RABBE INC | | | SCAC4 |
| 30 | RABO | R & B DELIVERY | | | SCAC3 |
| 31 | RABP | R & B TRANSFER | | | SCAC3 |
| 32 | RABQ | RABIDEAU BROTHERS | | | SCAC3 |
| 33 | RABR | RAY BROTHERS TRANSPORTATION | | | SCAC3 |
| 34 | RABR | RAY BROTHERS TRANSPORTATION INC | | | SCAC4 |
| 35 | RABS | RAINBOW TRANSPORT | | | SCAC3 |
| 36 | RABS | RISING STAR TRANSPORT | | | SCAC4 |
| 37 | RABT | RABB BROS TRUCKING INC | | | SCAC3 |
| 38 | RABU | RABANCO COMPANIES | | | SCAC4 |
| 39 | RABW | RAINBOW EXPRESS INC | | | SCAC3 |
| 40 | RAC | Icar Air | Callsign: Tuzla Air, | BIH | AVCODES |
| 41 | RAC | Royal Air Charters | IATA: 3Q, Designator 3Q recalled by IATA. | Z | AVCODES |
| 42 | RAC | Royal Air Charters | Designator 3Q recalled by IATA. | Z | AVCODES |
| 43 | RAC | Icar Air | | | ICAO1 |
| 44 | RAC | Ryukyu Air Commuter | | J | TRAFFIC |
| 45 | RACA | R A C AIR SERVICES INC | | | SCAC3 |
| 46 | RACA | Railcare | | S | TRAFFIC |
| 47 | RACB | RENT-A-COACH | | | SCAC3 |
| 48 | RACC | RATHBUN CARTAGE COMPANY, THE | | | SCAC3 |
| 49 | RACD | R & A CARRIERS INC | | | SCAC4 |
| 50 | RACF | R A C TRANSPORTATION SERVICES INC | | | SCAC3 |
| 51 | RACG | RALEIGH AIR CARGO EXPRESS INC | | | SCAC3 |
| 52 | RACG | RACING TRANSPORT | | | SCAC4 |
| 53 | RACH | RAINS, CHARLES W | | | SCAC3 |
| 54 | RACI | ROSE CITY APPLIANCE INSTALLATION | | | SCAC3 |
| 55 | RACJ | RACING ACERS | | | SCAC4 |
| 56 | RACK | RACK TRANSPORT CO INC | | | SCAC3 |
| 57 | RACL | RACINE, GEORGES LES ENTERPRISES | | | SCAC3 |
| 58 | RACM | R AND C RANCHES LLC | | | SCAC4 |
| 59 | RACN | Raccoon River R.R. Co. | added 7/1981; eliminated 4/1982 | | NAKINA |
| 60 | RACN | Raccoon River R.R. Co. | added 7/81; eliminated 4/82 | | NRHS |
| 61 | RACN | RACCOON RIVER RAILROAD | | | PWRC |
| 62 | RACN | Raccoon River Railroad | | | RSRV |
| 63 | RACN | RACE INC | | | SCAC4 |
| 64 | RACO | RARITAN CONTAINER CO INC | | | SCAC3 |
| 65 | RACO | RICH AND CO | | | SCAC4 |
| 66 | RACP | RAC TRANSPORT COMPANY, INC | | | SCAC3 |
| 67 | RACP | RAC TRANSPORT CO | | | SCAC4 |
| 68 | RACQ | RED ARROW CORPORATION | | | SCAC3 |
| 69 | RACR | RACERS GROUP, THE | | | SCAC4 |
| 70 | RACS | RACCO EXPRESS INC | | | SCAC3 |
| 71 | RACT | ROYCE AYR CUTTING TOOLS INC | | | SCAC4 |
| 72 | RACU | HERMES LOGISTICA SA | | E | BIC |
| 73 | RACU | ACCIONA LOGISTICA | | | SCAC4 |
| 74 | RACV | RAMCO TRUCKING INC | | | SCAC4 |
| 75 | RACW | RALCO CORPORATION | | | SCAC3 |
| 76 | RACX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 77 | RACX | General Electric Railcar Services Corp. | added 10/1995; eliminated 1/2000 | | NAKINA |
| 78 | RACX | Railway Accessories Co. | 10/1966; eliminated 10/1967 | | NAKINA |
| 79 | RACX | Railway Accessories Co. (J.L. Ortner) | 1/1943-7/1965 | | NAKINA |
| 80 | RACX | Railway Accessories Co. (J.L. Ortner) | 1/52-7/65 | | NRHS |
| 81 | RACX | Railway Accessories Co. | 10/66; eliminated 10/67 | | NRHS |
| 82 | RACX | General Electric Railcar Services Corp. | added 10/95; eliminated 1/2000 | | NRHS |
| 83 | RACX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 84 | RACX | *RAILWAY ACCESSORIES CO. | | | PWRC |
| 85 | RACX | +GENERAL ELECTRIC RAIL SERVICES CORPORATION | | | PWRC |
| 86 | RACX | General Electric Rail Services Corporation | | | RSRV |
| 87 | RACX | RAILWAY ACCESSORIES CO | | | SCAC3 |
| 88 | RACY | REYNOLDS ASPHALT & CONSTRUCTION COM | | | SCAC4 |
| 89 | RAD | Alada Empresa de Transportes Aereos | Callsign: Air Alada, | ANG | AVCODES |
| 90 | RAD | Alada | | | ICAO1 |
| 91 | RADA | RANCOURT, DANIEL L | | | SCAC4 |
| 92 | RADB | RADONICH BROTHERS TRUCKING | | | SCAC3 |
| 93 | RADC | RAPID DELIVERY CO | | | SCAC3 |
| 94 | RADD | RAY, DON DRIVE-A-WAY COMPANY INC | | | SCAC3 |
| 95 | RADD | RAD TECHNOLOGIES INC | | | SCAC4 |
| 96 | RADF | RADFORDS EXPRESS, INC | | | SCAC3 |
| 97 | RADG | RAD FREIGHT LINES | | | SCAC3 |
| 98 | RADG | RAMIREZ AMES, JUAN & JESUS DANIEL G | | | SCAC4 |
| 99 | RADI | RADISSON TRANSPORT INC | | | SCAC3 |
| 100 | RADI | RAD TRANSPORT INC | | | SCAC4 |
