| 7801 | RRBA | ROJAS RUIZ, BALTAZAR | | | SCAC4 |
| 7802 | RRBB | R & R BIG BUS | | | SCAC4 |
| 7803 | RRBE | REEDEREI BLUE STAR GMBH | | | SCAC4 |
| 7804 | RRBG | R & R BROKERAGE | | | SCAC3 |
| 7805 | RRBH | ROSEAU RIVER BUFFALO RANCH | | | SCAC4 |
| 7806 | RRBK | R & R BULK TRANSPORT INC | | | SCAC4 |
| 7807 | RRBL | RED RIVER BARGE LINE, INC | | | SCAC3 |
| 7808 | RRBN | RAPID ROBIN | | | SCAC3 |
| 7809 | RRBS | ROADRUNNER BUS LINES | | | SCAC3 |
| 7810 | RRBT | ROARK, ROBERT TRUCKING CO | | | SCAC3 |
| 7811 | RRBT | ROARK, ROBERT TRUCKING CO | | | SCAC4 |
| 7812 | RRBU | RRB RAILROAD GMBH | | D | BIC |
| 7813 | RRBX | Rampart Range Corp. | added 4/1994; eliminated 7/1999; added 10/1999; 7/2000-7/2005; eliminated 1/2007 | | NAKINA |
| 7814 | RRBX | Rampart Range Corp. | added 4/94; eliminated 7/99; added 10/99; 7/2000 | | NRHS |
| 7815 | RRBX | RAMPART RANGE CORPORATION | | | PWRC |
| 7816 | RRBX | Rampart Range Corporation | | | RSRV |
| 7817 | RRBX | RAMPART RANGE CORPORATION | | | SCAC4 |
| 7818 | RRC | Aero Roca, S.A. de C.V. | Callsign: Aeroroca, | MEX | AVCODES |
| 7819 | RRC | Aero Roca | | | ICAO1 |
| 7820 | RRC | REDMONT RAILWAY COMPANY | | | PWRC |
| 7821 | RRC | Respondek Railroad Corporation | | | RSRV |
| 7822 | RRC | REDMONT RAILWAY COMPANY INC | | | SCAC4 |
| 7823 | RRC | Respondek Railroad Corporation | | USA | TRAFFIC |
| 7824 | RRCB | RAWHIDE RODEO COMPANY | | | SCAC4 |
| 7825 | RRCE | RACE RECYCLING AND COMPACTING EQUIP | | | SCAC4 |
| 7826 | RRCF | ROUGH RIDER CRANE SERVICE | | | SCAC4 |
| 7827 | RRCG | R AND R CARTAGE INC | | | SCAC3 |
| 7828 | RRCH | R & R CHARTER | | | SCAC3 |
| 7829 | RRCH | R & R OIL INC | | | SCAC4 |
| 7830 | RRCI | Redmont Ry. Co., Inc. | 7/2000-7/2005 | | NAKINA |
| 7831 | RRCI | Redmont Ry. Co., Inc. | Jul-00 | | NRHS |
| 7832 | RRCI | REDMONT RAILWAY COMPANY | | | PWRC |
| 7833 | RRCI | Redmont Railway | | | RSRV |
| 7834 | RRCI | R & R CONTRACTING INC | | | SCAC4 |
| 7835 | RRCK | RED ROCK ENTERPRISES LLC | | | SCAC4 |
| 7836 | RRCL | R & R EXPEDITERS INC | | | SCAC3 |
| 7837 | RRCM | RIVER REGION COOPERATIVE | | | SCAC4 |
| 7838 | RRCN | R & R CONSTRUCTION CO INC | | | SCAC4 |
| 7839 | RRCO | Rochelle R.R. Co. | 7/2000-7/2005 | | NAKINA |
| 7840 | RRCO | Rochelle R.R. Co. | Jul-00 | | NRHS |
| 7841 | RRCO | ROCHELLE RAILROAD COMPANY | | | PWRC |
| 7842 | RRCO | Rochelle Railroad | | | RSRV |
| 7843 | RRCO | ROCHELLE RAILROAD CO | | | SCAC4 |
| 7844 | RRCP | REMI MARITIME CORPORATION | | | SCAC4 |
| 7845 | RRCQ | RADAR RUNNERS CORP | | | SCAC4 |
| 7846 | RRCS | RELIABLE RUNNERS COURIER SERVICE IN | | | SCAC4 |
| 7847 | RRCT | RR CONSULTING | | | SCAC4 |
| 7848 | RRCU | RAUTARUUKKI OY | | | SCAC3 |
| 7849 | RRCU | REFTRADE RENTAL B V | | | SCAC4 |
| 7850 | RRCV | RIVER CITY VAN LINE INC | | | SCAC3 |
| 7851 | RRCX | Radar Railcar, Inc. | 1/1994-7/2005 (not listed) | | NAKINA |
| 7852 | RRCX | Regent Refining (Canada) Ltd. (marks changed from TLCX) | added 4/1956; 10/1957; eliminated 10/1958 | | NAKINA |
| 7853 | RRCX | Regent Refining (Canada) Ltd. | 10/57; eliminated 10/58 | | NRHS |
| 7854 | RRCX | Radar Railcar, Inc. | 1/94-7/2000 | | NRHS |
| 7855 | RRCX | *REGENT REFINING (CANADA) LTD. | | | PWRC |
| 7856 | RRCX | +RADER RAILCAR, INC. | | | PWRC |
| 7857 | RRCX | Radar Railcar | | | RSRV |
| 7858 | RRCX | RADAR RAILCAR, INC. | | | SCAC4 |
| 7859 | RRCY | RAPID RECOVERY TOWING LTD | | | SCAC4 |
| 7860 | RRD | ADOLPH COORS COMPANY | | | PWRC |
| 7861 | RRDC | RAILINC | | | SCAC3 |
| 7862 | RRDC | RAILINC | | | SCAC4 |
| 7863 | RRDD | R & R DISTRIBUTORS INC | | | SCAC4 |
| 7864 | RRDE | ROADRUNNER DELIVERY SERVICE | | | SCAC3 |
| 7865 | RRDF | REED, R D HEAVY TRANSPORT LLC | | | SCAC4 |
| 7866 | RRDI | ROAD RUNNER DELIVERY INC | | | SCAC3 |
| 7867 | RRDL | ROAD RUNNER DELIVERY SERVICE INC | | | SCAC3 |
| 7868 | RRDM | RICHCO ROTTERDAM B V | | | SCAC3 |
| 7869 | RRDN | R & R DISTRIBUTING CO INC | | | SCAC4 |
| 7870 | RRDP | ROMAN ROAD EXPRESS | | | SCAC4 |
| 7871 | RRDR | ROUGHRIDER TRANSPORT | | | SCAC3 |
| 7872 | RRDS | RAPID RESPONSE DELIVERY INC | | | SCAC4 |
| 7873 | RRDT | ROAD RIDER TRANSPORT LTD | | | SCAC3 |
| 7874 | RRDV | R & R DELIVERY SERVICE INC | | | SCAC3 |
| 7875 | RRDX | RAILROAD DEVELOPMENT CORPORATION | | | SCAC4 |
| 7876 | RRDY | R & R DELIVERY SERVICE INC | | | SCAC3 |
| 7877 | RRDY | R-R TRUCKING | | | SCAC4 |
| 7878 | RRE | Aerotransportes Internacionales de Torreon S.A. de C.V. | Callsign: Aero Torreon, | MEX | AVCODES |
| 7879 | RRE | Aerotransportes Internacionales De Torreon | | | ICAO1 |
| 7880 | RREB | RAPID RESPONSE INC | | | SCAC4 |
| 7881 | RREC | R & R ENTERPRISES | | | SCAC4 |
| 7882 | RRED | ROADRUNNER EXPRESS DELIVERY SERVICE | | | SCAC3 |
| 7883 | RREH | RANDOL INC | | | SCAC4 |
| 7884 | RREI | ROAD RUNNER EXPRESS INC | | | SCAC3 |
| 7885 | RREJ | R & R EXPRESS LOGISTICS INC | | | SCAC4 |
| 7886 | RREK | ROAD RUNNER EXPRESS | | | SCAC4 |
| 7887 | RREM | R & R EQUIPMENT LEASING LLC | | | SCAC4 |
| 7888 | RREN | R & R ENTERPRISE INC | | | SCAC4 |
| 7889 | RREP | R & R EXPRESS INC | | | SCAC3 |
| 7890 | RREQ | ROLLIN'R ENTERPRISES INC | | | SCAC4 |
| 7891 | RRER | RANSOM, RICK ENTERPRISES INC | | | SCAC4 |
| 7892 | RRES | R & R EXPRESS | | | SCAC3 |
| 7893 | RRET | ROAD RUNNER TRANSPORTATION INC | | | SCAC3 |
| 7894 | RREV | RED RIGG EXPRESS INC | | | SCAC4 |
| 7895 | RREW | RAMBLIN ROSE EXPRESS | | | SCAC4 |
| 7896 | RREX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 7897 | RREX | General Electric Railcar Services Corp. | added 10/1992; 1/1994; eliminated 1/2000 | | NAKINA |
| 7898 | RREX | Itel Rail Corp. | eliminated 10/1992 | | NAKINA |
| 7899 | RREX | Rex Railways, Inc. (transferred to Itel Rail Corp.) | added 10/1988 | | NAKINA |
| 7900 | RREX | Rex Railways, Inc. | added 7/1978; 1/1980; eliminated 10/1988 | | NAKINA |
