| 3501 | RFPZ | CSX TRANSPORTATION | | | SCAC4 |
| 3502 | RFR | Royal Air Force | IATA: RR, Callsign: Rafair, Designator RR recalled by IATA. | GB | AVCODES |
| 3503 | RFR | Royal Air Force | Callsign: Rafair, Designator RR recalled by IATA. | GB | AVCODES |
| 3504 | RFR | Royal Air Force | IATA: RR | | ICAO1 |
| 3505 | RFRC | R FREIGHT CARRIERS INC | | | SCAC3 |
| 3506 | RFRC | ROSCO FREIGHT SERVICE INC | | | SCAC4 |
| 3507 | RFRD | REFORD, ROBERT INC | | | SCAC3 |
| 3508 | RFRI | ROM-FREIGHT INC | | | SCAC4 |
| 3509 | RFRN | ROUSH FENWAY RACING LLC | | | SCAC4 |
| 3510 | RFRP | ROOM FOR RENT EQUIPMENT LEASING INC | | | SCAC4 |
| 3511 | RFRR | REDFERN RESOURCES LTD | | | SCAC4 |
| 3512 | RFRS | RAINS FREIGHT SYSTEM INC | | | SCAC3 |
| 3513 | RFRT | REFRIGERATED TRANSPORT | | | SCAC3 |
| 3514 | RFRU | Rain For Rent | | | RSRV |
| 3515 | RFRU | RAIN FOR RENT | | | SCAC4 |
| 3516 | RFRX | Rick Franklin Corp. | 7/2000-7/2005 (not listed) | | NAKINA |
| 3517 | RFRX | Rick Franklin Corp. | Jul-00 | | NRHS |
| 3518 | RFRX | *ROARING FORK RAILROAD HOLDING AUTHORITY | | | PWRC |
| 3519 | RFRX | +RICK FRANKLIN CORPORATION | | | PWRC |
| 3520 | RFRX | Rick Franklin Corporation | | | RSRV |
| 3521 | RFS | Rossair Pty Ltd. | | AUS | AVCODES |
| 3522 | RFS | Rossair | | | ICAO1 |
| 3523 | RFSA | ROOKS FARM SERVICE INC | | | SCAC4 |
| 3524 | RFSB | R & F SERVICES LLC | | | SCAC4 |
| 3525 | RFSC | RESTAURANT FOOD SUPPLY COMPANY | | | SCAC3 |
| 3526 | RFSC | REED FREIGHT SERVICES INC | | | SCAC4 |
| 3527 | RFSD | REDLINE FREIGHT SYSTEMS CORP | | | SCAC4 |
| 3528 | RFSF | REPUBLIC FREIGHT SYSTEM INC | | | SCAC3 |
| 3529 | RFSG | RG FREIGHTERS SA DE CV | | | SCAC4 |
| 3530 | RFSI | ROYAL FREIGHT SYSTEM INC | | | SCAC3 |
| 3531 | RFSI | RITCHIE FEED & SEED INC | | | SCAC4 |
| 3532 | RFSJ | RJ FUEL SERVICES INC | | | SCAC4 |
| 3533 | RFSL | RUDOLPH FARM SUPPLY INC | | | SCAC3 |
| 3534 | RFSQ | RAPID FREIGHT SERVICE | | | SCAC3 |
| 3535 | RFSQ | RAPID FREIGHT SERVICE | | | SCAC4 |
| 3536 | RFSS | RAINBOW FREIGHT SYSTEMS INC | | | SCAC3 |
| 3537 | RFSS | ROYAL FREIGHT SERVICES | | | SCAC4 |
| 3538 | RFST | ROADFAST | | | SCAC4 |
| 3539 | RFSU | TEXTAINER EQUIPMENT MANAGEMENT LIMITED | | USA | BIC |
| 3540 | RFSU | RAFFLES LEASE PTE LTD | | | SCAC4 |
| 3541 | RFSV | RAFFLES SHIPPING & INVESTMENT PTE L | | | SCAC4 |
| 3542 | RFSY | RICHARDSONS FUEL SUPPLY | | | SCAC4 |
| 3543 | RFT | Academia Romana de Aviatie | Callsign: Romanian Academy, | RO | AVCODES |
| 3544 | RFT | Scoala Superioara De Aviatie Civila | | | ICAO1 |
| 3545 | RFTA | RISING FAST TRANSPORT INC | | | SCAC3 |
| 3546 | RFTA | REFIX TRUCK AND TRAILER REPAIR | | | SCAC4 |
| 3547 | RFTB | ROCK FORK TIMBER INC | | | SCAC3 |
| 3548 | RFTC | R F TRUCKING OF DANE COUNTY LLC | | | SCAC4 |
| 3549 | RFTE | RFT EXPRESS INC | | | SCAC4 |
| 3550 | RFTF | R F F TRUCKING & FERTILIZER INC | | | SCAC3 |
| 3551 | RFTF | R F F TRUCKING & FERTILIZER INC | | | SCAC4 |
| 3552 | RFTG | RELWOF FARMS TRUCKING INC | | | SCAC4 |
| 3553 | RFTH | REID FARMS TRANSPORT INC | | | SCAC4 |
| 3554 | RFTI | R F TRUCKING INC | | | SCAC3 |
| 3555 | RFTI | R F TRANSPORT INC | | | SCAC4 |
| 3556 | RFTJ | ROSS FARMS TRUCKING | | | SCAC4 |
| 3557 | RFTL | RTL-ROBINSON ENTERPRISES LTD | | | SCAC3 |
| 3558 | RFTL | REACH FOR THE RAINBOW | | | SCAC4 |
| 3559 | RFTM | ROGERS FAMILY TRUCKING LLC | | | SCAC4 |
| 3560 | RFTN | RUFFOLO TRANSPORTATION INC | | | SCAC3 |
| 3561 | RFTO | REFRIGERATED TRANSPORTATION SYSTEMS | | | SCAC3 |
| 3562 | RFTO | RUDD FARMS TRANSPORTATION INC | | | SCAC4 |
| 3563 | RFTR | R F TRUCKING INC | | | SCAC3 |
| 3564 | RFTR | REEF TRANSPORT | | | SCAC4 |
| 3565 | RFTR | REPFERTRANS S.R.L | | RO | VKM |
| 3566 | RFTS | REICHS FORD TRAILER RENTALS LLC | | | SCAC4 |
| 3567 | RFTU | REFTERMINAL LTD | | RUS | BIC |
| 3568 | RFTU | MARITIME PROJECTS AND TECHNOLOGIES | | | SCAC4 |
| 3569 | RFTV | REFRIGERATED TRUCK SERVICE | | | SCAC3 |
| 3570 | RFUU | REFAGROTRANS | | RUS | BIC |
| 3571 | RFWD | ROBERTSON FORWORDING CO | | | SCAC3 |
| 3572 | RFWI | RAM FREIGHTWAYS INC | | | SCAC3 |
| 3573 | RFWN | ROYAL FREIGHT & WAREHOUSE INC | | | SCAC4 |
| 3574 | RFWS | RAINBOW FORWARDING SERVICE INC | | | SCAC3 |
| 3575 | RFWX | Robert Fer et Metaux Inc. | added 4/2008 | | NAKINA |
| 3576 | RFWX | ROBERT FER ET METAUX INC. | | | PWRC |
| 3577 | RFWX | ROBERT FER ET METAUX INC | | | SCAC4 |
| 3578 | RFX | J P Hunt, Inc., Air Carriers | Callsign: Reflex, | USA | AVCODES |
| 3579 | RFX | J P Hunt Air Carriers | | | ICAO1 |
| 3580 | RFXI | RFX INC | | | SCAC4 |
| 3581 | RFXP | REFRIGERATED EXPRESS | | | SCAC3 |
| 3582 | RFXR | RF TRANSPORTES RIO FUERTE SA DE CV | | | SCAC4 |
| 3583 | RFY | Aerofly, S.A. de C.V. | Callsign: Aerofil, | MEX | AVCODES |
| 3584 | RFZ | Singapore Flying College (Jet Operations) | Callsign: Raffles, | SGP | AVCODES |
| 3585 | RFZM | REFRIGERADOS ZAMORA | | | SCAC4 |
| 3586 | RG | Varig S.A. (Viacao Aerea Rio-Grandense) | ICAO: VRG, Callsign: Varig, IATA Prefix: 042, Ceased operations on 20 July 2006. | BR | AVCODES |
| 3587 | RG | Rotana Jet Aviation d/b/a Rotana Jet | ICAO: RJD, Callsign: Rotana, | UAE | AVCODES |
| 3588 | RG | Rana Gruber | | NO | VKM |
| 3589 | RGA | Region Air Pte. Ltd. | IATA: 7S, Callsign: Orchid, | SGP | AVCODES |
| 3590 | RGA | Regency Aviation Services Ltd. | Callsign: Regency, | GB | AVCODES |
| 3591 | RGA | Royal Ghanian Airlines Limited | Callsign: Royal Ghana, Ceased operations. | GH | AVCODES |
| 3592 | RGA | Swiss Air Ambulance Ltd. (Helicopter Rescue Guard) | Callsign: Rega, | CH | AVCODES |
| 3593 | RGA | Royal Ghanaian Airlines | | | ICAO1 |
| 3594 | RGAB | RIGGLE, GARY TRUCKING | | | SCAC4 |
| 3595 | RGAE | REGIONAL AIR EXPRESS INC | | | SCAC3 |
| 3596 | RGAE | ROLLMARK TRUCKING INC | | | SCAC4 |
| 3597 | RGAG | RIVERS GARAGE | | | SCAC4 |
| 3598 | RGAI | REGIONAL TRUCKING CO INC | | | SCAC3 |
| 3599 | RGAL | REGAL TRUCKING SERVICE CORP | | | SCAC3 |
| 3600 | RGAL | REGAL TRANSPORT LTD | | | SCAC4 |
