| 3701 | RGGR | ROGAN GRANITINDUSTRIE | | | SCAC3 |
| 3702 | RGGR | RANGEL GUTIERREZ, ROBERTO | | | SCAC4 |
| 3703 | RGGS | RIGGS TRUCKING INC | | | SCAC3 |
| 3704 | RGGS | RIGGS TRUCKING LLC | | | SCAC4 |
| 3705 | RGGT | ROGGERO, DICK TRUCKING | | | SCAC3 |
| 3706 | RGGZ | REARDAN GRAIN GROWERS | | | PWRC |
| 3707 | RGHA | RIGHT-AWAY SHIPPING SERVICE | | | SCAC3 |
| 3708 | RGHC | RIGHT CHOICE TRANSPORTATION INC | | | SCAC4 |
| 3709 | RGHI | REDOAK GREEN HOUSES INC | | | SCAC4 |
| 3710 | RGHL | RITE-GUY HAULING INC | | | SCAC3 |
| 3711 | RGHQ | RIDGE HOMES | | | SCAC3 |
| 3712 | RGHR | ROUGH RIDER TRANSPORATION SERVICES | | | SCAC3 |
| 3713 | RGHS | RAIL FREIGHT SOLUTIONS INC | | | SCAC4 |
| 3714 | RGHU | RICH GLORY (HONG KONG) LIMITED | | PRC | BIC |
| 3715 | RGHX | Ring's Gas & Appliance Co. | added 4/1973; 1/1975; eliminated 4/1979 | | NAKINA |
| 3716 | RGHX | Ring's Gas & Appliance Co. | added 4/73; 1/75; eliminated 4/79 | | NRHS |
| 3717 | RGHX | RING'S GAS & APPLIANCE CO | | | PWRC |
| 3718 | RGI | Regional Airlines | IATA: VM, Callsign: Regional Airlines, IATA Prefix: 982, Merged into Regional Compagnie Aerienne Europeene | F | AVCODES |
| 3719 | RGIC | RIGGS, INC | | | SCAC3 |
| 3720 | RGID | RODRIGUEZ GARZA, IDALIA | | | SCAC4 |
| 3721 | RGIE | REGIONAL IMPORT AND EXPORT TRUCKING | | | SCAC3 |
| 3722 | RGIF | R & G INTERFREIGHT | | | SCAC4 |
| 3723 | RGIG | ROLLING ACRES DAIRY | | | SCAC4 |
| 3724 | RGIL | REGIONAL TRANSFER CO | | | SCAC3 |
| 3725 | RGIN | REGIONAL INTERNATIONAL SERVICES | | | SCAC3 |
| 3726 | RGIN | R G INTERNATIONAL | | | SCAC4 |
| 3727 | RGIO | RIGGI OIL COMPANY INC | | | SCAC4 |
| 3728 | RGIQ | R G TRUCKING | | | SCAC3 |
| 3729 | RGIQ | RMD GROUP INC | | | SCAC4 |
| 3730 | RGIS | READING INDUSTRIAL SCRAP INC | | | SCAC3 |
| 3731 | RGIS | RAGNAR RELOCATION SERVICES | | | SCAC4 |
| 3732 | RGIT | RIG-IT TRANSPORTATION | | | SCAC4 |
| 3733 | RGIX | Republic Gas and Utilities Corp. | added 10/1974; 1/1975-7/2000; eliminated 4/2001; 7/2005 (not listed) | | NAKINA |
| 3734 | RGIX | Republic Gas and Utilities Corp. | added 10/74; 1/75-7/2000; eliminated 4/2001 | | NRHS |
| 3735 | RGIX | REPUBLIC GAS & UTILITIES CORP | | | PWRC |
| 3736 | RGIX | Republic Gas and Utilities Corporation | | | RSRV |
| 3737 | RGIX | REPUBLIC GAS & UTILITIES CORP | | | SCAC4 |
| 3738 | RGJC | RINCON GUERRERO, JOSE CRUZ | | | SCAC4 |
| 3739 | RGJH | ROGNESS, JAMES H | | | SCAC4 |
| 3740 | RGJI | ROGERS, JIM INC | | | SCAC3 |
| 3741 | RGJI | RGB TRANSPORTATION INC | | | SCAC4 |
| 3742 | RGJM | RIGGS, JAMES M | | | SCAC3 |
| 3743 | RGJM | RAMOS GALLARDO, JUAN MANUEL AND VIL | | | SCAC4 |
| 3744 | RGK | Real Aeroclub de Gran Canaria | Callsign: Granca, | E | AVCODES |
| 3745 | RGKC | ROLLING E TRUCKING LLC | | | SCAC4 |
| 3746 | RGKE | R G TRUCKING & EQUIPMENT | | | SCAC3 |
| 3747 | RGKE | ROAD EX HAULAGE INC | | | SCAC4 |
| 3748 | RGKG | RIGGAN TRUCKING | | | SCAC3 |
| 3749 | RGKG | RAGE TRUCKING INC | | | SCAC4 |
| 3750 | RGKI | REGAL TRUCKING INC | | | SCAC4 |
| 3751 | RGKK | ROBITILLE, G K TRUCKING LLC | | | SCAC4 |
| 3752 | RGKL | R G TRUCK LEASING CO INC | | | SCAC3 |
| 3753 | RGKN | REGIOS TRUCKING INCORPORATION | | | SCAC4 |
| 3754 | RGKT | ROBITILLE, G K TRUCKING LLC | | | SCAC4 |
| 3755 | RGL | Regional Air Lines | IATA: FN, Callsign: Maroc Regional, IATA Prefix: 259, | MA | AVCODES |
| 3756 | RGL | Regionalair | Callsign: Regair, | GB | AVCODES |
| 3757 | RGL | Regionair | IATA: JA, Callsign: Regair, Ceased operations in 1990. | GB | AVCODES |
| 3758 | RGL | Mountain Crest Farm, LLC | Callsign: Ridgeline, Name changed to Tradecraft Flying Service, LLC. | USA | AVCODES |
| 3759 | RGL | Tradecraft Flying Service, LLC | Callsign: Ridgeline, Name changed from Mountain Crest Farm, LLC. | USA | AVCODES |
| 3760 | RGL | Regional Air Lines | | | ICAO1 |
| 3761 | RGLB | RELIANCE GLOBAL LOGISTICS USA | | | SCAC4 |
| 3762 | RGLC | REGAL COACHES | | | SCAC3 |
| 3763 | RGLC | RGL EXPRESS | | | SCAC4 |
| 3764 | RGLD | RGL DISTRIBUTION CENTER INC | | | SCAC3 |
| 3765 | RGLD | RECYCLING GROUP LTD | | | SCAC4 |
| 3766 | RGLE | REGIONAL ENTERPRISES INC | | | SCAC3 |
| 3767 | RGLF | RTS GROUP LLC | | | SCAC4 |
| 3768 | RGLH | RAFFERTY GLOBAL LOGISTICS LLC | | | SCAC4 |
| 3769 | RGLJ | ROGERS, L. J., JR., TRUCKING, INC | | | SCAC3 |
| 3770 | RGLJ | ROGERS, L J JR TRUCKING INC | | | SCAC4 |
| 3771 | RGLK | RIEGEL TRUCKING | | | SCAC4 |
| 3772 | RGLL | REG-LEN LEASING INC | | | SCAC3 |
| 3773 | RGLM | REGAL LIMOUSINES | | | SCAC3 |
| 3774 | RGLO | REGAL TRUCKING CO | | | SCAC3 |
| 3775 | RGLP | REGAL TRANSPORT INC | | | SCAC4 |
| 3776 | RGLQ | REGAL FREIGHT LINES INC | | | SCAC3 |
| 3777 | RGLS | REGAL SERVICES | | | SCAC3 |
| 3778 | RGLS | REGAL SERVICES | | | SCAC4 |
| 3779 | RGLT | REGAL TRANSPORTS | | | SCAC3 |
| 3780 | RGLX | Roberto de la Garza y Hnos, S.A. | eliminated 1/1983 | | NAKINA |
| 3781 | RGLX | Roberto de la Garza y Hnos, S.A. | eliminated 1/83 | | NRHS |
| 3782 | RGLX | ROBERTO DE LA GARZA Y HNOS, SA | | | PWRC |
| 3783 | RGM | Rangemile Ltd. | Callsign: Rangemile, | GB | AVCODES |
| 3784 | RGM | PT. Raffles Global Angkasa (RGA) | Callsign: Black Stone, | RI | AVCODES |
| 3785 | RGM | Rangemile Limited | | | ICAO1 |
| 3786 | RGMA | RGM A CALIFORNIA CORPORTATION | | | SCAC3 |
| 3787 | RGMA | RUGGERI MARBLE / GRANITE | | | SCAC4 |
| 3788 | RGMB | RODRIGUEZ GUTIERREZ, MATIAS ARTURO | | | SCAC4 |
| 3789 | RGMC | ROSENGARD MOVING SYSTEMS INC | | | SCAC4 |
| 3790 | RGMF | REGIONAL MOTOR FREIGHT INC | | | SCAC3 |
| 3791 | RGMG | RIO GRANDE MOVING & STORAGE CO INC | | | SCAC3 |
| 3792 | RGMI | RANGER MARINE INC | | | SCAC3 |
| 3793 | RGML | ROGERS, M L INC | | | SCAC3 |
| 3794 | RGML | RIOUX, GILBERT M & FILS LTD | | | SCAC4 |
| 3795 | RGMN | RODGERS MOTOR EXPRESS | | | SCAC3 |
| 3796 | RGMO | RODGERS MOTOR LINES INC | | | SCAC3 |
| 3797 | RGMP | RGM EXPRESS INC | | | SCAC4 |
| 3798 | RGMQ | RINGLE MOTOR EXPRESS | | | SCAC3 |
| 3799 | RGMR | REFRIGERADOS GUTIERREZ | | | SCAC4 |
| 3800 | RGMS | R G M ENTERPRISES | | | SCAC3 |
