| 1 | ROR | Roraima Airways | Callsign: Roraima, | GUY | AVCODES |
| 2 | ROR | Roraima Airways | | | ICAO1 |
| 3 | ROR | Rockton & Rion Ry. | 1/1975-1/1980 | | NAKINA |
| 4 | ROR | Rockton & Rion Ry. | 1/75-1/80 | | NRHS |
| 5 | ROR | FORMERLY ROCKTON & RION RAILROAD | | | PWRC |
| 6 | ROR | ROCKTON & RION RAILWAY | | | SCAC4 |
| 7 | RORA | ROGER A LEASING LTD (DIV OF AIPA) | | | SCAC3 |
| 8 | RORB | ROMERO ORTEGA, RUBEN | | | SCAC4 |
| 9 | RORF | ROARING FORK FOUNDERS | | | SCAC3 |
| 10 | RORF | ROMERO ROBLES, FAUSTO | | | SCAC4 |
| 11 | RORG | ROANES RIGGING & TRANSFER CO INC | | | SCAC3 |
| 12 | RORI | ROTRA INC | | | SCAC3 |
| 13 | RORI | ROTRA LLC | | | SCAC4 |
| 14 | RORL | ROMAN, R TRUCK LEASING INC | | | SCAC3 |
| 15 | RORL | ROMAN, R TRUCK LEASING INC | | | SCAC4 |
| 16 | RORM | ROADRUNNER MOTOR LINES INC | | | SCAC3 |
| 17 | RORN | ROADRUNNER EXPRESS SERVICE | | | SCAC3 |
| 18 | RORO | RODCO TRANSPORTATION | | | SCAC3 |
| 19 | RORP | ROAD RUNNER EXPRESS | | | SCAC3 |
| 20 | RORR | ROPER TRUCKING SERVICE | | | SCAC3 |
| 21 | RORT | ROAD RAIL TRANSPORT LTD | | | SCAC3 |
| 22 | RORT | RO TRANSPORT | | | SCAC4 |
| 23 | RORU | Road Runner | Fleetname for some S.M.Coaches operations | GB | TRAFFIC |
| 24 | RORX | Radio Oil Refineries, Ltd. | 7/1937 (not listed); 4/1938-1/1952; eliminated 4/1953 | | NAKINA |
| 25 | RORX | Radio Oil Refineries, Ltd. | 4/38-1/52 | | NRHS |
| 26 | RORX | *RADIO OIL REFINERIES, LTD. | | | PWRC |
| 27 | RORX | +RED OAK RAIL TRANSPORT, LLC | | | PWRC |
| 28 | RORY | ROUTH, RAY & SONS INC | | | SCAC3 |
| 29 | RORZ | ROBINSON RUN | | | PWRC |
