| 1 | REP | Rep Trans Avia Ltd. | Callsign: Reptrans, | UA | AVCODES |
| 2 | REP | Republic Airlines | IATA: RC, Merged into Northwest Airlines | USA | AVCODES |
| 3 | 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 |
| 4 | REP | Republic Airlines | Real: REP / RC | USA | TRAFFIC |
| 5 | REPA | REPUBLIC LOGISTIC SERVICES | | | SCAC4 |
| 6 | REPC | REPCO | | | SCAC3 |
| 7 | REPD | REPP, DAVID | | | SCAC3 |
| 8 | REPE | REPUBLIC EXPRESS INC | | | SCAC3 |
| 9 | REPE | REPUBLIC EXPRESS INC | | | SCAC4 |
| 10 | REPG | REPUBLIC GYPSUM COMPANY | | | SCAC3 |
| 11 | REPG | REF PRINTING | | | SCAC4 |
| 12 | REPJ | RED EYE ENTERPRISES INC | | | SCAC3 |
| 13 | REPK | READY-PACK INC | | | SCAC3 |
| 14 | REPL | REPLOGLE TRANSPORT COMPANY | | | SCAC3 |
| 15 | REPM | R E P TRUCKING | | | SCAC3 |
| 16 | REPN | R E T INC | | | SCAC3 |
| 17 | REPO | REPUBLIC VAN & STORAGE OF ORANGE CO | | | SCAC3 |
| 18 | REPR | RENCH ENTERPRISES INC | | | SCAC3 |
| 19 | REPS | REPSHER, CARLTON | | | SCAC3 |
| 20 | REPT | RELIABLE PRODUCT TRANSPORT | | | SCAC3 |
| 21 | REPT | RELIABLE PRODUCT TRANSPORT | | | SCAC4 |
| 22 | REPT | Reptons Coaches | | GB | TRAFFIC |
| 23 | REPU | REPUBLIC MARINE LINES INC. | | | SCAC3 |
| 24 | REPV | REPUBLIC VAN LINES OF SAN DIEGO, INC | | | SCAC3 |
| 25 | REPX | Reliable Packing Co. | added 7/1953; 7/1954-4/1961; eliminated 10/1963 | | NAKINA |
| 26 | REPX | Mid-West Despatch Car Co. (Reserve Petroleum Co.) | 7/1937-1/1941 | | NAKINA |
| 27 | REPX | Reserve Development Co. | 7/1935 | | NAKINA |
| 28 | REPX | Reserve Petroleum Co. | 7/1930-7/1932 | | NAKINA |
| 29 | REPX | Mid-West Despatch Car Co. | Apr-38 | | NRHS |
| 30 | REPX | Reliable Packing Co. | 10/57-4/61 | | NRHS |
| 31 | REPX | *RESERVE PETROLEUM CO. (MID-WEST DESPATCH CAR CO.) | | | PWRC |
| 32 | REPX | *RELIABLE PACKING CO. | | | PWRC |
| 33 | REPY | ROME EXPRESS INC (IL CORP) | | | SCAC3 |
