| 1 | RGR | Region Air, Inc. | Callsign: Regionair, | CDN | AVCODES |
| 2 | RGR | Avior Regional, C.A. | IATA: 3R, Callsign: Avior Regional, Designator 9V recalled by IATA | YV | AVCODES |
| 3 | RGR | Avior Regional, C.A. | Callsign: Avior Regional, Designator 9V recalled by IATA | YV | AVCODES |
| 4 | RGR | Region Air | | | ICAO1 |
| 5 | RGRA | ROGERS, RALPH A | | | SCAC3 |
| 6 | RGRA | RICO GUERRA, GABINO | | | SCAC4 |
| 7 | RGRC | RODRIGUE, RICHARD | | | SCAC4 |
| 8 | RGRD | ROGERS DEDICATED SERVICES, INC | | | SCAC3 |
| 9 | RGRD | ROGERS DEDICATED SERVICES INC | | | SCAC4 |
| 10 | RGRE | RIG RUNNER EXPRESS | | | SCAC3 |
| 11 | RGRE | RODRIGUE, RHEAUME BERNARD | | | SCAC4 |
| 12 | RGRF | ROGERS FARMS | | | SCAC3 |
| 13 | RGRF | ROUGE RIVER FARMS INC | | | SCAC4 |
| 14 | RGRG | RAAB, GEORGE | | | SCAC4 |
| 15 | RGRI | RAGER, RONALD INC | | | SCAC3 |
| 16 | RGRK | RODGERS TRUCKING | | | SCAC3 |
| 17 | RGRL | REGOGO RACING LLC | | | SCAC4 |
| 18 | RGRN | ROGERS TRUCKING INC | | | SCAC3 |
| 19 | RGRN | RIG RUNNERS INC | | | SCAC4 |
| 20 | RGRO | RAMBLING ROSE TRUCKING | | | SCAC4 |
| 21 | RGRR | ROGERS TRANSPORT SYSTEMS LLC | | | SCAC4 |
| 22 | RGRS | ROGERS, C J TRANS CO | | | SCAC3 |
| 23 | RGRS | ROGERS FOODS LTD | | | SCAC4 |
| 24 | RGRT | ROGERS TOWING SERVICE | | | SCAC4 |
| 25 | RGRTA | Rochester-Genesee Regional Transportation Authority | | USA | TRAFFIC |
| 26 | RGRU | COMBS INVESTMENT PROPERTY LP | | USA | BIC |
| 27 | RGRW | REGIONAL RELOCATION & WAREHOUSING I | | | SCAC3 |
| 28 | RGRW | REGIONAL RELOCATION & WAREHOUSING I | | | SCAC4 |
| 29 | RGRX | Rio Grande Railcar Co., Inc. | 1/1994-7/2005 (not listed) | | NAKINA |
| 30 | RGRX | Rio Grande Railcar Co., Inc. | 1/94-7/2000 | | NRHS |
| 31 | RGRX | RIO GRANDE RAILCAR COMPANY, INC. | | | PWRC |
| 32 | RGRX | Rio Grande Railcar | | | RSRV |
| 33 | RGRX | RIO GRANDE RAILCAR COMPANY, INC. | | | SCAC4 |
| 34 | RGRY | ROBLES GONZALEZ, REY DAVID | | | SCAC4 |
| 35 | RGRZ | CSX TRANSPORTATION, INC. | | | PWRC |
