| 3601 | RGAN | RANGER MARINE S A | | | SCAC3 |
| 3602 | RGAN | RANGER MARINE S A | | | SCAC4 |
| 3603 | RGAO | RGA TRANSPORT INC | | | SCAC4 |
| 3604 | RGAP | RICHARD & GAIL AUTO TRANSPORT | | | SCAC3 |
| 3605 | RGAR | REED, GARY | | | SCAC3 |
| 3606 | RGAS | R G A TRANSPORTATION SYSTEMS | | | SCAC3 |
| 3607 | RGAT | REGAL TRANSPORTATION INC | | | SCAC3 |
| 3608 | RGAT | REGATTA TRANSPORTATION | | | SCAC4 |
| 3609 | RGB | Regional Air | Callsign: Regional Bahamas, | BS | AVCODES |
| 3610 | RGBD | ROYAL GAME BIRDS LTD | | | SCAC4 |
| 3611 | RGBK | ROGERS TRUCKING | | | SCAC4 |
| 3612 | RGBL | RIO GRANDE BULK CARRIERS INC NY | | | SCAC3 |
| 3613 | RGBP | RGB TRANSPORT | | | SCAC4 |
| 3614 | RGBR | ROSENBERGER, THAD TRUCKING INC | | | SCAC3 |
| 3615 | RGBR | REEBIE STORAGE & MOVING CO INC | | | SCAC4 |
| 3616 | RGBT | R G B TRANSPORTATION COMPANY INC | | | SCAC3 |
| 3617 | RGBT | R G B TRANSPORTATION COMPANY INC | | | SCAC4 |
| 3618 | RGC | Servicios Aeroes Regiomontanos | Callsign: Regiomontano, | MEX | AVCODES |
| 3619 | RGC | Servicios Aereos Regiomontanos | | | ICAO1 |
| 3620 | RGCA | RIGHT COOPERATIVE ASSOCIATION, THE | | | SCAC4 |
| 3621 | RGCE | RIDGE-CREST ENTERPRISES INC | | | SCAC3 |
| 3622 | RGCG | REGAL CARTAGE COMPANY | | | SCAC3 |
| 3623 | RGCH | REGIONAL COACH | | | SCAC3 |
| 3624 | RGCH | RAGAR TRANSPORTATION LTD | | | SCAC4 |
| 3625 | RGCL | REGAN COACH LINES | | | SCAC3 |
| 3626 | RGCO | REIMER GRAIN CO | | | SCAC3 |
| 3627 | RGCP | RING CAN CORPORATION | | | SCAC3 |
| 3628 | RGCR | R & G CARRIERS | | | SCAC4 |
| 3629 | RGCS | REDINGER, CLIFFORD S TRUCKING | | | SCAC3 |
| 3630 | RGCS | R G CRUCES INTERNACIONALES | | | SCAC4 |
| 3631 | RGCT | RANEY, GARY C TRUCKING | | | SCAC3 |
| 3632 | RGCT | ROCKLAND TRUCKING-N-FORESTRY | | | SCAC4 |
| 3633 | RGCU | RAVA GROUP CONTAINER SERVICES | | USA | BIC |
| 3634 | RGCU | MULTI GAS LIMITED | | | SCAC4 |
| 3635 | RGCX | Rio Grande Chemical Ltd. | added 7/2004; 7/2005 | | NAKINA |
| 3636 | RGCX | Rio Grande Chemical Sales Co. | added 4/1979; 1/1980-7/2000; eliminated 7/2004 | | NAKINA |
| 3637 | RGCX | Riverside Gas Co. | added 1/1965; 7/1965; eliminated 10/1966; 10/1966 (not listed) | | NAKINA |
| 3638 | RGCX | The Roth Gasoline Corp. | 8/1920-7/1923 | | NAKINA |
| 3639 | RGCX | Riverside Gas Co. | added 1/65; 7/65; eliminated 10/66 | | NRHS |
| 3640 | RGCX | Rio Grande Chemical Sales Co. | added 4/79; 1/80-7/2000 | | NRHS |
| 3641 | RGCX | *RIVERSIDE GAS CO. | | | PWRC |
| 3642 | RGCX | +RIO GRANDE CHEMICAL LTD. | | | PWRC |
| 3643 | RGCX | Rio Grande Chemical Sales | | | RSRV |
| 3644 | RGCX | RIVERSIDE GAS CO, THE | | | SCAC3 |
| 3645 | RGCX | RIO GRANDE CHEMICAL SALES CO | | | SCAC4 |
| 3646 | RGCY | REGENCY SHIPPING CORP | | | SCAC3 |
| 3647 | RGD | World Air Cargo Company (International Air Company) | Callsign: Kuwait Cargo, | KWT | AVCODES |
| 3648 | RGDA | ROGERS, DEAN | | | SCAC4 |
| 3649 | RGDE | RENEGADE EXPRESS | | | SCAC4 |
| 3650 | RGDG | RUGGLES, DOUGLAS | | | SCAC3 |
| 3651 | RGDI | R G DELIVERY SERVICE INC | | | SCAC3 |
| 3652 | RGDJ | RIOS, GILDARDO DE JESUS | | | SCAC4 |
| 3653 | RGDL | RIGIDPLY RAFTERS INC | | | SCAC3 |
| 3654 | RGDL | RIGIDPLY RAFTERS INC | | | SCAC4 |
| 3655 | RGDM | RUHLIG, DAVID A FARMS | | | SCAC4 |
| 3656 | RGDO | ROSS, GORDON O OF LONDON LIMITED | | | SCAC3 |
| 3657 | RGDR | RIDGE DISTRIBUITON SYSTEMS INC | | | SCAC3 |
| 3658 | RGDR | REFRIGERADOS OCHOA | | | SCAC4 |
| 3659 | RGDT | REGAN DISTRIBUTORS TRANSPORTATION I | | | SCAC3 |
| 3660 | RGE | Regioempresas, S.A. de C.V. | Callsign: Regioempresas, | MEX | AVCODES |
| 3661 | RGE | HG Aviation Limited | IATA: RX, Callsign: Regent, | BD | AVCODES |
| 3662 | RGE | HG Aviation Limited | Callsign: Regent, Designator RX recalled by IATA | BD | AVCODES |
| 3663 | RGEB | RGE TRUCK LINES INC | | | SCAC4 |
| 3664 | RGEC | REGIONAL EXPRESS COMPANY | | | SCAC3 |
| 3665 | RGED | RAMOS, GERARDO | | | SCAC4 |
| 3666 | RGEE | RENEGADE ENTERPRISE | | | SCAC3 |
| 3667 | RGEG | REGAL EAGLE INCORPORATED | | | SCAC3 |
| 3668 | RGEG | REGENCY MANUFACTURING LTD | | | SCAC4 |
| 3669 | RGEI | ROGERS TRUCKING COMPANY INC | | | SCAC3 |
| 3670 | RGEJ | REFRIGERATED EXPRESS LLC | | | SCAC4 |
| 3671 | RGEK | R.G.E. TRUCK LINES, INC | | | SCAC3 |
| 3672 | RGEM | ROGERS TRUCKING | | | SCAC3 |
| 3673 | RGEN | REGENT TRUCKING INC | | | SCAC3 |
| 3674 | RGEP | RANGER EXPRESS | | | SCAC4 |
| 3675 | RGEQ | REGENT TRUCKING INC | | | SCAC3 |
| 3676 | RGEQ | REGATTA TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 3677 | RGES | ROGERS TRUCKING CO INC | | | SCAC3 |
| 3678 | RGES | ROGERS SERVICE GROUP INC | | | SCAC4 |
| 3679 | RGET | RUNGE TRUCKING | | | SCAC3 |
| 3680 | RGEX | Royal Gorge Industries, LLC | 7/2000-7/2005 (not listed) | | NAKINA |
| 3681 | RGEX | Royal Gorge Industries, LLC | Jul-00 | | NRHS |
| 3682 | RGEX | ROYAL GORGE INDUSTRIES | | | PWRC |
| 3683 | RGEX | Royal Gorge Industries | | | RSRV |
| 3684 | RGEX | ROYAL GORGE INDUSTRIES LLC | | | SCAC4 |
| 3685 | RGFA | RIVERGULF AGENCY, INC | | | SCAC3 |
| 3686 | RGFL | REHRIG FUEL | | | SCAC4 |
| 3687 | RGFT | REGENCE FOOTWEAR INC | | | SCAC4 |
| 3688 | RGFU | FORASOL | | | SCAC4 |
| 3689 | RGFV | RIO GRANDE FAST SERVICE INC | | | SCAC4 |
| 3690 | RGG | Royal Air (Gambia) Limited | | WAG | AVCODES |
| 3691 | RGGD | RODRIGUEZ GARCIA, GASPAR | | | SCAC4 |
| 3692 | RGGE | REGGIES TRUCKING INC | | | SCAC3 |
| 3693 | RGGG | RANGEL, G & G TRUCKING | | | SCAC4 |
| 3694 | RGGH | RODRIGUEZ GARCIA, GISELA JUDITH | | | SCAC4 |
| 3695 | RGGJ | Ryomgård - Gjerrild - Grenå Jernbane (Gjerrildbanen) | 1911 - 1956 | DK | jernbanen.dk |
| 3696 | RGGJ | RIGG, JOSEPH MARION | | | SCAC3 |
| 3697 | RGGJ | Ryomgård - Gjerrild - Grenå Jernbane (Gjerrildbanen) | 1911 - 1956 | DK | TRAFFIC |
| 3698 | RGGM | RUNGE, G & M INC | | | SCAC4 |
| 3699 | RGGO | REGGIE OIL CO INC | | | SCAC4 |
| 3700 | RGGP | RIGGERT TRANSPORTATION | | | SCAC3 |
