| Race Cargo Airlines | ACE | ||
| RAF-Avia | MTL | ||
| Rainbow Cargo Express | RBO | ||
| Ramair | RMY | ||
| RAS Fluggesellschaft | RW | RLD | 586 |
| Ratioflug | RAT | ||
| RDS Avia | |||
| Real Aviation | RLV | ||
| Red Baron Express | RBN | ||
| Redwing Airways | RX | RWG | 594 |
| Reed Aviation | RAV | ||
| Reeve Aleutian Airways | RV | RVV | 338 |
| Regal (Crownair) | 2R | CRW | 809 |
| Regal Bahamas International Airways | JT | RBH | |
| Region Air | 7S | RGA | |
| Regional | YS | RGI | 982 |
| Regional Air | RIL | ||
| Regional Airlines (Morocco) | FN | RGL | |
| Regional Express | ZL | HZL | 899 |
| Reliant Airlines | RLT | ||
| Remex Airline | RXM | ||
| Renan Air | RAN | ||
| Reno Air | ROA | 384 | |
| Renown Aviation | RGS | ||
| Republic Airlines | RW | RPA | 052 |
| Rex Aviation | TNZ | ||
| Rheintalflug Seewald | WE | RTL | 915 |
| Rhoades International | RDS | ||
| Rich International Airways | JN | RIA | |
| Riga Airlines | GV | RIG | 248 |
| Rila Air | RAB | ||
| Rio-Sul Servicos Aereos Regionais SA | SL | RSL | 293 |
| Road-Air Lines | RDL | ||
| Roblex | |||
| Romavia | WQ | RMV | 534 |
| Rossiya Airlines | FV | SDM | 195 |
| Routair Aviation Services | RUT | ||
| Royal Air Cambodge | VJ | 658 | |
| Royal Air Cargo | RCG | ||
| Royal Air Force | RR | RFR | |
| Royal Air Freighters | RAX | ||
| Royal Air Maroc | AT | RAM | 147 |
| Royal Airlines | RPK | ||
| Royal Brunei Airlines | BI | RBA | 672 |
| Royal Cargo | QN | ROY | 498 |
| Royal Jordanian | RJ | RJA | 512 |
| Royal Khmer Airlines | RK | RKH | |
| Royal Nepal Airlines | RA | RNA | 285 |
| Royal Phnom Penh Airways | RL | PPW | |
| Royal Rwanda Airlines | RRA | ||
| Royal Swazi National Airways | ZC | RSN | 141 |
| Royal Tongan Airlines | WR | HRH | 971 |
| Royal Wings | RWZ | ||
| RPX Airlines | RH | RPH | |
| RusAero | KLE | ||
| Rusavia | |||
| Ruslan Airlines | RLN | ||
| Ruslan International | |||
| RUSS Air Transport Company | RUR | ||
| Russian Sky Airlines | P7 | ESL | 215 |
| RUTACA Rutas Aerreas Compania Anonima | RUC | ||
| Rwanda Airlines | RUA | ||
| Rwanda Airways | RWA | ||
| Rwandair Express | WB | RWD | 459 |
| Ryan International Airlines | HS | RYN | |
| Ryanair | FR | RYR | 224 |