| 1 | 6R | Georgian Airlines | ICAO: GEG, IATA Prefix: 684, Designator 6R recalled by IATA | GE | AVCODES |
| 2 | 6R | Aerotransporte de Carga Union, S.A. de C.V. | ICAO: TNO, Callsign: Aerounion, IATA Prefix: 873, Founded on 05 March 1998. | MEX | AVCODES |
| 3 | 6R | BritRail Ltd. | ICAO: n/a, Designator 6R* recalled by IATA. Railway Service | GB | AVCODES |
| 4 | 6R | Alrosa Company Limited Mirny Air | ICAO: DRU, Designator 6R reinstated by IATA | RUS | AVCODES |
| 5 | 6R | Open Joint Stock Company "ALROSA" (Mirny Air Enterprise) | ICAO: DRU, Callsign: Mirny, Designator 6R reinstated by IATA | RUS | AVCODES |
| 6 | 6R | Air Affaires Afrique | Founded in 1978. Ceased operations during 2003. | CAM | AVCODES |
