| 6701 | RNWP | R & W TRANSPORTATION INC | | | SCAC4 |
| 6702 | RNWQ | RITE NOW LOGISTICS LLC | | | SCAC4 |
| 6703 | RNWS | ROBINSON, W S TRUCKING LIMITED LIAB | | | SCAC4 |
| 6704 | RNWU | RANEWS TRUCK & EQUIPMENT LLC | | | SCAC4 |
| 6705 | RNWX | Alan Wood Steel Co. | 1/1950-1/1952; eliminated 4/1954 | | NAKINA |
| 6706 | RNWX | Rainey-Wood Coke Co. | 7/1930-4/1947 | | NAKINA |
| 6707 | RNWX | Rainey-Wood Coke Co., Inc. | 7/1923 | | NAKINA |
| 6708 | RNWX | Rainey-Wood Coke Co. | Apr-38 | | NRHS |
| 6709 | RNWX | Alan Wood Steel Co. | 1/52; eliminated 4/54 | | NRHS |
| 6710 | RNWX | ALAN WOOD STEEL CO. [RAINEY-WOOD COKE CO.] | | | PWRC |
| 6711 | RNWZ | (NS) RETIRED 04-06-93 ATP | | | PWRC |
| 6712 | RNX | 1Time Airline (Pty) Ltd | IATA: 1T, Callsign: Next Time, IATA designator changed to T6. | ZA | AVCODES |
| 6713 | RNX | Aeronexus Corporate Pty Ltd. | Callsign: Next Time, Name changed to 1Time Airline (Pty) Ltd. | ZA | AVCODES |
| 6714 | RNX | 1Time Airline (Pty) Ltd | IATA: T6, Callsign: Next Time, Founded 2003. Commenced operations on 25 February 2004. Ceased operations on 02 November 2012. Name changed from Aeronexus Corporate Pty Ltd. | ZA | AVCODES |
| 6715 | RNX | 1Time Airline | IATA: 1T | | ICAO1 |
| 6716 | RNXA | ROBSON TRANSPORT | | | SCAC4 |
| 6717 | RNXC | ROLLINEX INC | | | SCAC4 |
| 6718 | RNXI | RNT TRANSPORT INC | | | SCAC4 |
| 6719 | RNXT | RAMAN TRANSPORT | | | SCAC4 |
| 6720 | RNYE | RANDYS EXPRESS | | | SCAC3 |
| 6721 | RNYJ | RAINEY, J C | | | SCAC3 |
| 6722 | RNYQ | RONEY, W C TRUCKING CO | | | SCAC3 |
| 6723 | RNYT | RODNEYS TRUCKING LLC | | | SCAC4 |
| 6724 | RNZAF | Royal New Zealand Air Force | | NZ | TRAFFIC |
| 6725 | RNZC | RENZ TRUCK LINES INC | | | SCAC3 |
| 6726 | RO | Compnia Nationala de Transporturi Aeriene Romane TAROM S.A. | ICAO: ROT, Callsign: Tarom, IATA Prefix: 281, Name changed from TAROM - Romanian Air Transport. | RO | AVCODES |
| 6727 | ROA | Reno Air, Inc. | IATA: QQ, Callsign: Reno Air, Merged in American Airlines | USA | AVCODES |
| 6728 | ROA | Roland Air Flugverkehrs und Vertriebsgesellschaft mbH | IATA: DU, Callsign: Roland Air, | D | AVCODES |
| 6729 | ROA | Atom Airways | Callsign: Atomways, | RO | AVCODES |
| 6730 | ROA | Reno Air | IATA: QQ | | ICAO1 |
| 6731 | ROAA | ROADEX SERVICES LTD | | | SCAC4 |
| 6732 | ROAB | ROBBINS, ALLAN B | | | SCAC3 |
| 6733 | ROAB | ROGERS FARM SUPPLY | | | SCAC4 |
| 6734 | ROAD | ROAD COMMERCE CORPORATION | | | PWRC |
| 6735 | ROAD | ROAD COMMERCE CORPORATION | | | SCAC3 |
| 6736 | ROAD | ROAD LINK XPRESS | | | SCAC4 |
| 6737 | ROADR | Roadrunner | City: Harlow | GB | TRAFFIC |
| 6738 | ROAE | ROSS, A J LOGISTICS INC | | | SCAC3 |
| 6739 | ROAE | ROAD RUNNER TRUCKING | | | SCAC4 |
| 6740 | ROAF | ROAD AMERICAN FREIGHT SYSTEMS INC | | | SCAC3 |
| 6741 | ROAF | Romanian Air Force | | RO | TRAFFIC |
| 6742 | ROAG | ROWLAND, LONNIE TRUCKING | | | SCAC3 |
| 6743 | ROAJ | ROADAIR LEASING INC | | | SCAC3 |
| 6744 | ROAK | ROADKINS TRUCKING CORP | | | SCAC3 |
| 6745 | ROAL | ROANE TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 6746 | ROAM | ROADMAS | | | SCAC4 |
| 6747 | ROAN | ROANS TRUCKING SERVICE | | | SCAC3 |
| 6748 | ROAN | ROANE LOGISTICS INC | | | SCAC4 |
| 6749 | ROAO | ROARING EXPRESS CO INC | | | SCAC3 |
| 6750 | ROAO | ROBERT FILM SERVICES INC | | | SCAC4 |
| 6751 | ROAP | ROAP TRANSPORT INC | | | SCAC3 |
| 6752 | ROAQ | ROAYL TRUCKING CO | | | SCAC3 |
| 6753 | ROAR | ROAD AND RAIL TRUCKING COMPANY | | | PWRC |
| 6754 | ROAR | ROAR LOGISTICS INC | | | SCAC4 |
| 6755 | ROAT | ROES STAIR CO | | | SCAC4 |
| 6756 | ROAU | ROAM GLOBAL SOLUTIONS LLC | | USA | BIC |
| 6757 | ROAW | ROBINSON AND WILLIAMS TRANSPORT INC | | | SCAC3 |
| 6758 | ROAY | ROAD-CON SYSTEMS INC | | | SCAC3 |
| 6759 | ROB | African Inter. Airways (West Africa) Ltd. | Callsign: Higher Ground, | WAN | AVCODES |
| 6760 | ROB | SLL Resources Limited | Callsign: Bat Jet, | RSM | AVCODES |
| 6761 | ROB | Robel | | DE | VKM |
| 6762 | ROBA | ROBINSONS EXPRESS CO, INC | | | SCAC3 |
| 6763 | ROBA | ROBERTS ASSOCIATES INC | | | SCAC4 |
| 6764 | ROBB | ROBISON TRUCKING INC | | | SCAC4 |
| 6765 | ROBC | ROBINSON CARTAGE CO | | | SCAC3 |
| 6766 | ROBC | ROBINSON CARTAGE COMPANY | | | SCAC4 |
| 6767 | ROBD | ROBIDEAUS EXPRESS, INC | | | SCAC3 |
| 6768 | ROBD | RINGER OIL OF PA INC | | | SCAC4 |
| 6769 | ROBE | ROBERTS TRUCKING CO, INC | | | SCAC3 |
| 6770 | ROBE | ROBEY, JEFF TRUCK LINES INC | | | SCAC4 |
| 6771 | ROBF | ROBINSON FREIGHT LINES, INC, THE | | | SCAC3 |
| 6772 | ROBG | ROBERTS, GEORGE F | | | SCAC3 |
| 6773 | ROBH | ROBART TRANSPORTATION INC | | | SCAC3 |
| 6774 | ROBH | ROBART TRANSPORTATION INC | | | SCAC4 |
| 6775 | ROBI | ROBIN TRUCK LINE | | | SCAC3 |
| 6776 | ROBI | ROBIN TRUCK LINE | | | SCAC4 |
| 6777 | ROBK | ROBERTS, TOM M | | | SCAC3 |
| 6778 | ROBK | ROBERTS, TOM M TRUCKLINES INC | | | SCAC4 |
| 6779 | ROBL | ROBERTS TRUCKING | | | SCAC3 |
| 6780 | ROBL | ROBELLO TRANSPORTATION | | | SCAC4 |
| 6781 | ROBM | ROBINSON TRANSPORTATION INC | | | SCAC3 |
| 6782 | ROBM | ROBINSON TRANSPORTATION INC | | | SCAC4 |
| 6783 | ROBN | ROBSON CO INC | | | SCAC3 |
| 6784 | ROBN | ROBUST TRANSPORT SERVICES LTD | | | SCAC4 |
| 6785 | ROBO | ROBEY CARTAGE COMPANY INC | | | SCAC3 |
| 6786 | ROBP | ROBERTSON ENTERPRIZE INC | | | SCAC4 |
| 6787 | ROBQ | ROBINSON, J AND B CARTAGE CO | | | SCAC3 |
| 6788 | ROBR | ROBBINS, ROBERTA | | | SCAC3 |
| 6789 | ROBS | ROBINSON TRUCKING | | | SCAC4 |
| 6790 | ROBU | ROBERTO BUCCI S.P.A | | I | BIC |
| 6791 | ROBV | ROBINSON STAVE INC | | | SCAC4 |
| 6792 | ROBW | ROBINSON, W T & SON TRUCKING CONTRA | | | SCAC3 |
| 6793 | ROBY | ROUSES BODY SHOP INC | | | SCAC3 |
| 6794 | ROBZ | ROBCO TRANSPORTATION, INC. | | | PWRC |
| 6795 | ROBZ | Robco Transportation | | | RSRV |
| 6796 | ROBZ | ROBCO TRANSPORTATION, INC. | | | SCAC4 |
| 6797 | ROC | Rocky Mountain Airlines | | CDN | AVCODES |
| 6798 | ROC | Rocky Mountain Airlines | | | ICAO1 |
| 6799 | ROCA | R O C TRANSPORT INC | | | SCAC4 |
| 6800 | ROCA | Republic of China Army | | RC | TRAFFIC |
