| 701 | RAX | Royal Air Freight | | | ICAO1 |
| 702 | RAX | RPI-AAR Cooperative Test Program | 1/1975-1/1980; 1/1994 (not listed); 7/2000-7/2005 (not listed) | | NAKINA |
| 703 | RAX | RPI-AAR Cooperative Test Program | 1/75-7/2000 | | NRHS |
| 704 | RAX | RPI-AAR COOPERATIVE TEST PROGRAM | | | PWRC |
| 705 | RAX | RPI-AAR Cooperative Test Program | | | RSRV |
| 706 | RAXE | ROAD AIR EXPRESS | | | SCAC3 |
| 707 | RAXL | ROBERTS AUTO TRANSPORT LLC | | | SCAC4 |
| 708 | RAXN | ROCCA TRANSPORT SERVICES INC | | | SCAC4 |
| 709 | RAXQ | RAIDERS EXPRESS INC | | | SCAC3 |
| 710 | RAXR | RAY EXPRESS INC | | | SCAC3 |
| 711 | RAXRA | RAXELL RAIL S.A. | | E | TRAFFIC |
| 712 | RAXS | RAYMOND EXPRESS INTERNATIONAL | | | SCAC3 |
| 713 | RAXS | RAYMOND EXPRESS INTERNATIONAL | | | SCAC4 |
| 714 | RAXT | R A TRANSPORT | | | SCAC4 |
| 715 | RAY | Regional Air Services | Callsign: Reas, | CZ | AVCODES |
| 716 | RAY | Royale Airlines, Inc. | Callsign: Ray, ICAO callsign changed to Royale Air | USA | AVCODES |
| 717 | RAY | Royale Airlines, Inc. | Callsign: Royale Air, ICAO callsign changed from Ray | USA | AVCODES |
| 718 | RAY | Real Aeroclub de Navarra | | E | AVCODES |
| 719 | RAYA | RAYAN | | | SCAC4 |
| 720 | RAYC | RAYS TRUCKING | | | SCAC3 |
| 721 | RAYC | RAYO TRANSFER | | | SCAC4 |
| 722 | RAYF | RAY TRANSPORT INC | | | SCAC3 |
| 723 | RAYG | RAY, PAUL TRUCKING | | | SCAC4 |
| 724 | RAYH | RAYMOND, HARVEY | | | SCAC4 |
| 725 | RAYJ | RAY, JOE D | | | SCAC3 |
| 726 | RAYK | RAYTRANS TRUCKING | | | SCAC4 |
| 727 | RAYM | RAY THE MOVER OF MANCHESTER, INC | | | SCAC3 |
| 728 | RAYN | Rayonier Inc. | | USA | TRAFFIC |
| 729 | RAYP | RAY, J D COMPANY | | | SCAC3 |
| 730 | RAYQ | RAY TRUCKING COMPANY INC | | | SCAC3 |
| 731 | RAYQ | RAY-MAC INC | | | SCAC4 |
| 732 | RAYR | RAY TRANSPORT | | | SCAC4 |
| 733 | RAYS | RAYS TRANSFER | | | SCAC3 |
| 734 | RAYT | RAYS TRANSFER | | | SCAC3 |
| 735 | RAYU | KNOW HOW TRADING B.V. | | NL | BIC |
| 736 | RAYV | RAYS MOVERS | | | SCAC3 |
| 737 | RAYV | RAYS MOVERS INC | | | SCAC4 |
| 738 | RAYW | RAYS TRUCKING CO | | | SCAC3 |
| 739 | RAYX | Peck Iron & Metal Co., Inc. | added 7/1961; 7/1965-10/1966; eliminated 10/1967 | | NAKINA |
| 740 | RAYX | Peck Iron & Metal Co., Inc. | 7/65-10/66; eliminated 10/67 | | NRHS |
| 741 | RAYX | PECK IRON & METAL CO., INC. | | | PWRC |
| 742 | RAYX | PECK IRON & METAL CO INC | | | SCAC3 |
| 743 | RAYY | RAYS TRANSFER COMPANY | | | SCAC3 |
| 744 | RAYY | RAYS TRANSFER COMPANY | | | SCAC4 |
| 745 | RAZ | Rijnmond Air Services B.V. | Callsign: Rijnmond, | NL | AVCODES |
| 746 | RAZ | Real Aeroclub Zaragoza | | E | AVCODES |
| 747 | RAZ | Rijnmond Air Services | | | ICAO1 |
| 748 | RAZI | RAZER INC | | | SCAC4 |
| 749 | RAZL | R A Z LINES | | | SCAC3 |
| 750 | RAZO | RAZORBACK MOVING & STORAGE | | | SCAC3 |
| 751 | RAZP | RAZ TRANSPORTATION COMPANY | | | SCAC4 |
| 752 | RAZR | RAZOR EDGE TRUCKING LLC | | | SCAC4 |
| 753 | RB | Syrian Arab Airlines | ICAO: SYR, Callsign: Syrianair, IATA Prefix: 070, | SYR | AVCODES |
| 754 | RB | Rigibahnen | | CH | TRAFFIC |
| 755 | RB | Rigi-Bahnen AG | | CH | VKM |
| 756 | RBA | Royal Brunei Airlines Sdn. Bhd. | IATA: BI, Callsign: Brunei, IATA Prefix: 672, | BRU | AVCODES |
| 757 | RBA | Royal Brunei Airlines | IATA: BI | | ICAO1 |
| 758 | RBA | Regionalbus Augsburg GmbH | | D | TRAFFIC |
| 759 | RBAE | REBEL AIR EXPRESS | | | SCAC3 |
| 760 | RBAF | ROBERTS AIR FREIGHT | | | SCAC3 |
| 761 | RBAG | RO/BAG TRANSPORTATION INC | | | SCAC3 |
| 762 | RBAHN | Regiobahn ErlebnisZug GmbH | | A | TRAFFIC |
| 763 | RBAI | ROBAL LOGISTICS INC | | | SCAC3 |
| 764 | RBAI | R & B TRANSPORT | | | SCAC4 |
| 765 | RBAK | ROBERTA TRUCKING CO INC | | | SCAC3 |
| 766 | RBAL | RED BALL INC | | | SCAC3 |
| 767 | RBAL | RBA LOGISTICS INC | | | SCAC4 |
| 768 | RBAN | ROBINSON, ALLEN E | | | SCAC3 |
| 769 | RBAO | RBA TRANSPORTATION SERVICES | | | SCAC3 |
| 770 | RBAP | RELIABLE TRANSPORTATION ASSOCIATES | | | SCAC3 |
| 771 | RBAS | ROBINSON, ART & SONS | | | SCAC3 |
| 772 | RBAT | RELIABLE AUTO TRANSPORT | | | SCAC3 |
| 773 | RBAU | RABANCO COMPANIES | | | SCAC4 |
| 774 | RBAU | Reisse-Bau GmbH | | DE | VKM |
| 775 | RBAV | ROBCHART BV | | | SCAC4 |
| 776 | RBAW | ROBL, A W TRANSPORT | | | SCAC3 |
| 777 | RBAZ | (REAZ) RETIRED 04-06-93 ATP (ACI 2395) | | | PWRC |
| 778 | RBB | Rabbit-Air AG | Callsign: Rabbit, Ceased operation. | CH | AVCODES |
| 779 | RBB | Rabbit-Air | | | ICAO1 |
| 780 | RBB | Regiobahn Bitterfeld GmbH | Bitterfeld (Connex-Gruppe > Veolia Verkehr > Captrain) | D | privat-bahn.de |
| 781 | RBB | BNSF [BURLINGTON NORTHERN RAILROAD CO.] | | | PWRC |
| 782 | RBB | Regiobahn Bitterfeld-Berlin GmbH | | D | TRAFFIC |
| 783 | RBB | Regiobahn Bitterfeld | | DE | VKM |
| 784 | RBBC | RABBIT TRUCKING CORP | | | SCAC3 |
| 785 | RBBC | RIVER BEND BROKERAGE CO | | | SCAC4 |
| 786 | RBBE | RIBBE, DANIEL L TRUCKING | | | SCAC3 |
| 787 | RBBF | ROBBINS FLEISING FORWARDING INC | | | SCAC3 |
| 788 | RBBH | RV BOAT AND BIKE TRANSPORT LLC | | | SCAC4 |
| 789 | RBBI | ROBBINS TRUCKING INC | | | SCAC3 |
| 790 | RBBI | ROBBINS, JEFF | | | SCAC4 |
| 791 | RBBK | R B & B TRUCKING INC | | | SCAC3 |
| 792 | RBBL | ROBERTS, B L | | | SCAC4 |
| 793 | RBBN | BNSF Ry. Co. | added 4/2005; 7/2005 | | NAKINA |
| 794 | RBBN | Burlington Northern R.R. Co. | added 7/1981; 1/1994; eliminated 4/2005 | | NAKINA |
| 795 | RBBN | Burlington Northern Inc. | 1/1980; eliminated 7/1981 | | NAKINA |
| 796 | RBBN | Burlington Northern R.R. Co. | added 4/1975 | | NAKINA |
| 797 | RBBN | Burlington Northern R.R. Co. | added 4/75 | | NRHS |
| 798 | RBBN | Burlington Northern Inc. | 1/80; eliminated 7/81 | | NRHS |
| 799 | RBBN | Burlington Northern R.R. Co. | added 7/81; 1/94 | | NRHS |
| 800 | RBBN | BNSF [BURLINGTON NORTHERN RAILROAD CO.] | | | PWRC |
