| 3001 | RENH | REFRIGERADOS ENRIQUEZ | | | SCAC4 |
| 3002 | RENI | REINERT, HAROLD, INC | | | SCAC3 |
| 3003 | RENI | REINERT, HAROLD INC | | | SCAC4 |
| 3004 | RENJ | RENEAU, JAMES SEED CO | | | SCAC3 |
| 3005 | RENK | RENK TRUCKING INC | | | SCAC3 |
| 3006 | RENM | REYNOLDS, MARLIN L | | | SCAC3 |
| 3007 | RENN | RENN, R J SONS INC | | | SCAC3 |
| 3008 | RENN | RENNER TRUCKING | | | SCAC4 |
| 3009 | RENN | Rennsteigbahn | Real: RBG | D | TRAFFIC |
| 3010 | RENO | REANN DISTRIBUTION | | | SCAC3 |
| 3011 | RENOWN | Renown Bus Company | City: London | GB | TRAFFIC |
| 3012 | RENP | REALCO ENTERPRISES INC | | | SCAC3 |
| 3013 | RENQ | RENUS LOGISTICS PTE LTD | | | SCAC4 |
| 3014 | RENS | RENO, SAMUEL | | | SCAC3 |
| 3015 | RENS | REPUBLIC ENVIRONMENTAL SYSTEMS (TRA | | | SCAC4 |
| 3016 | RENT | RENN TRANSPORTATION CO INC | | | SCAC3 |
| 3017 | RENT | RENOLDS TRANSPORT | | | SCAC4 |
| 3018 | RENTR | RENTRANS CARGO SP. Z O.O. | | PL | VKM |
| 3019 | RENU | RENEWABLE CARBON MANAGEMENT LLC | | | SCAC4 |
| 3020 | RENX | RENKERT OIL LLC | | | PWRC |
| 3021 | RENX | RENKERT OIL LLC | | | SCAC4 |
| 3022 | RENY | REGAL ENTERPRISES | | | SCAC4 |
| 3023 | REO | Rio Airways | Callsign: Rio, | USA | AVCODES |
| 3024 | REO | Rio Airways | | | ICAO1 |
| 3025 | REOB | RECTOR, B & SONS TRUCKING | | | SCAC3 |
| 3026 | REOD | REDERIET OTTO DANIELSEN | | | SCAC3 |
| 3027 | REOE | REYNOLDS EXPRESS INC | | | SCAC3 |
| 3028 | REOF | RELIANT TRUCKING COMPANY | | | SCAC3 |
| 3029 | 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 |
| 3030 | REOM | REO MOVERS & VAN LINES, INC | | | SCAC3 |
| 3031 | REOM | REO MOVERS & VAN LINES INC | | | SCAC4 |
| 3032 | REON | REON TRANSPORTATION | | | SCAC3 |
| 3033 | REON | REONIAT LLC | | | SCAC4 |
| 3034 | REOO | REO TRANSPORTATION | | | SCAC3 |
| 3035 | REOP | R E AUTO TRANSPORTERS | | | SCAC3 |
| 3036 | REOP | REDCO TRANSPORT LTD | | | SCAC4 |
| 3037 | REOR | REM TRANSPORT | | | SCAC3 |
| 3038 | REOS | RESOURCE TECHNOLOGY SERVICES INC | | | SCAC3 |
| 3039 | REOT | REGIONAL EXPEDITE LTD (SUBSIDIARY O | | | SCAC4 |
| 3040 | REP | Rep Trans Avia Ltd. | Callsign: Reptrans, | UA | AVCODES |
| 3041 | REP | Republic Airlines | IATA: RC, Merged into Northwest Airlines | USA | AVCODES |
| 3042 | 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 |
| 3043 | REPA | REPUBLIC LOGISTIC SERVICES | | | SCAC4 |
| 3044 | REPC | REPCO | | | SCAC3 |
| 3045 | REPD | REPP, DAVID | | | SCAC3 |
| 3046 | REPE | REPUBLIC EXPRESS INC | | | SCAC3 |
| 3047 | REPE | REPUBLIC EXPRESS INC | | | SCAC4 |
| 3048 | REPG | REPUBLIC GYPSUM COMPANY | | | SCAC3 |
| 3049 | REPG | REF PRINTING | | | SCAC4 |
| 3050 | REPJ | RED EYE ENTERPRISES INC | | | SCAC3 |
| 3051 | REPK | READY-PACK INC | | | SCAC3 |
| 3052 | REPL | REPLOGLE TRANSPORT COMPANY | | | SCAC3 |
| 3053 | REPM | R E P TRUCKING | | | SCAC3 |
| 3054 | REPN | R E T INC | | | SCAC3 |
| 3055 | REPO | REPUBLIC VAN & STORAGE OF ORANGE CO | | | SCAC3 |
| 3056 | REPR | RENCH ENTERPRISES INC | | | SCAC3 |
| 3057 | REPS | REPSHER, CARLTON | | | SCAC3 |
| 3058 | REPT | RELIABLE PRODUCT TRANSPORT | | | SCAC3 |
| 3059 | REPT | RELIABLE PRODUCT TRANSPORT | | | SCAC4 |
| 3060 | REPT | Reptons Coaches | | GB | TRAFFIC |
| 3061 | REPU | REPUBLIC MARINE LINES INC. | | | SCAC3 |
| 3062 | REPV | REPUBLIC VAN LINES OF SAN DIEGO, INC | | | SCAC3 |
| 3063 | REPX | Reliable Packing Co. | added 7/1953; 7/1954-4/1961; eliminated 10/1963 | | NAKINA |
| 3064 | REPX | Mid-West Despatch Car Co. (Reserve Petroleum Co.) | 7/1937-1/1941 | | NAKINA |
| 3065 | REPX | Reserve Development Co. | 7/1935 | | NAKINA |
| 3066 | REPX | Reserve Petroleum Co. | 7/1930-7/1932 | | NAKINA |
| 3067 | REPX | Mid-West Despatch Car Co. | Apr-38 | | NRHS |
| 3068 | REPX | Reliable Packing Co. | 10/57-4/61 | | NRHS |
| 3069 | REPX | *RESERVE PETROLEUM CO. (MID-WEST DESPATCH CAR CO.) | | | PWRC |
| 3070 | REPX | *RELIABLE PACKING CO. | | | PWRC |
| 3071 | REPY | ROME EXPRESS INC (IL CORP) | | | SCAC3 |
| 3072 | REQC | RELI CARRIERS | | | SCAC4 |
| 3073 | REQE | RN EQUIPMENT | | | SCAC4 |
| 3074 | REQL | REIT, L INC | | | SCAC3 |
| 3075 | REQL | ROTATING EQUIPMENT.COM LLC | | | SCAC4 |
| 3076 | REQP | RTI EQUIPMENT CO LTD | | | SCAC4 |
| 3077 | REQT | REGAL TRANSPORT INC | | | SCAC3 |
| 3078 | REQT | REGAL MARINE INDUSTRIES INC | | | SCAC4 |
| 3079 | RER | Servicio Aereo Regional Cia, Ltda. | Callsign: Regair, | EC | AVCODES |
| 3080 | RER | Servicio Aereo Regional Regair | | | ICAO1 |
| 3081 | RER | | City: Paris | F | TRAFFIC |
| 3082 | RERA | REIFF, R A INC | | | SCAC4 |
| 3083 | RERD | REED, RANDLE TRUCKING | | | SCAC3 |
| 3084 | RERE | ROGERS, R E INC | | | SCAC3 |
| 3085 | RERE | ROGERS, R E INC | | | SCAC4 |
| 3086 | RERF | REEDHOL REFRIGERATED TRANSPORT INC | | | SCAC3 |
| 3087 | RERH | REDIKER R H TRANSPORT LTD | | | SCAC3 |
| 3088 | RERI | REED, R TRUCKING INC | | | SCAC3 |
| 3089 | RERJ | RENNER, R J TRANSPORT | | | SCAC3 |
| 3090 | RERK | REINACHER, RICKY | | | SCAC3 |
| 3091 | RERL | REDER LTD | | | SCAC3 |
| 3092 | RERM | REINERT MARINE TRANSPORT COMPANY | | | SCAC3 |
| 3093 | RERQ | REICH, RAY TRUCKING COMPANY INC | | | SCAC3 |
| 3094 | RERT | REINAUER TRANSPORTATION COMPANY | | | SCAC3 |
| 3095 | RERU | BEIJING JUNCHI INTERNATIONAL FREIGHT FORWARDERS CO., LTD. | | PRC | BIC |
| 3096 | RERV | RED RIVER TRANSPORTATION CO INC | | | SCAC3 |
| 3097 | RERW | REESE, R W TRUCKING INC | | | SCAC3 |
| 3098 | RERX | READER RAILROAD | | | PWRC |
| 3099 | RES | Restauraciones Aeronauticas, S.A. de C.V. | Callsign: Restauraciones, | MEX | AVCODES |
| 3100 | RES | Hawaiian Air Tours Service | Callsign: Resort, | USA | AVCODES |
