| 1 | BRM | Air 500 Limited | Callsign: Boomerang, | CDN | AVCODES |
| 2 | BRM | Top Helicopteros, S.L. | | E | AVCODES |
| 3 | BRM | Air 500 | | | ICAO1 |
| 4 | BRMA | BRYAN MOVING & STORAGE | | | SCAC3 |
| 5 | BRMB | BRYCES MOBILE HOME MOVERS | | | SCAC3 |
| 6 | BRMB | BARBA RAMIREZ, MARIA ALICIA | | | SCAC4 |
| 7 | BRMB | Brunnen-Morschach-Axenstein cog railway | | CH | TRAFFIC |
| 8 | BRMC | BLUE RIDGE MOTOR CARRIERS | | | SCAC4 |
| 9 | BRMD | BERTRAM DRILLING INC | | | SCAC4 |
| 10 | BRME | BROME LLC | | | SCAC4 |
| 11 | BRMF | BRUCE MOTOR FREIGHT INC | | | PWRC |
| 12 | BRMF | BRUNTON MOTOR FREIGHT INC OF ILLINO | | | SCAC3 |
| 13 | BRMF | BRUNTON MOTOR FREIGHT INC OF ILLINO | | | SCAC4 |
| 14 | BRMG | BERTIS MOVING & STORAGE CO INC | | | SCAC4 |
| 15 | BRMI | BLUEGRASS RAILROAD MUSEUM, INC. | | | PWRC |
| 16 | BRMI | Bluegrass Railroad Museum Inc. | | USA | TRAFFIC |
| 17 | BRMJ | BIRCH MOVING & STORAGE CO INC | | | SCAC3 |
| 18 | BRMK | BRINKMAN, L D TRUCKING CORP | | | SCAC3 |
| 19 | BRMM | BERMAN MOVING & STORAGE INC | | | SCAC3 |
| 20 | BRMP | BRAMMER MAXCY INC | | | SCAC3 |
| 21 | BRMP | BERRY METAL COMPANY | | | SCAC4 |
| 22 | BRMQ | BELVIDERE ALLIED READY-MIX INC | | | SCAC3 |
| 23 | BRMR | BROWN MARINE SERVICE | | | SCAC3 |
| 24 | BRMS | BERARD, ROY & SONS INC | | | SCAC3 |
| 25 | BRMT | BRENCO MARKETING CORP | | | SCAC4 |
| 26 | BRMU | BREMAR SP. Z O.O. | | PL | BIC |
| 27 | BRMU | COMMERCIAL SERVICE ENGINEERING | | | SCAC3 |
| 28 | BRMV | BRADY MOVING & STORAGE | | | SCAC3 |
| 29 | BRMX | Bershire Scenic Ry. Museum | 7/2005 (not listed) | | NAKINA |
| 30 | BRMX | Western Fruit Express Co. | added 10/1970; eliminated 1/1973; 1/1975 | | NAKINA |
| 31 | BRMX | Burlington Refrigerator Express Co. | added 7/1963; 7/1965-4/1970; eliminated 10/1970 | | NAKINA |
| 32 | BRMX | Burlington Refrigerator Express Co. | added 7/63; 7/65-4/70; eliminated 10/70 | | NRHS |
| 33 | BRMX | Western Fruit Express Co. | added 10/70; eliminated 1/73; 1/75 | | NRHS |
| 34 | BRMX | *WESTERN FRUIT EXPRESS [BURLINGTON REFRIGERATOR EXPRESS CO.] | | | PWRC |
| 35 | BRMX | +BERKSHIRE RAILWAY MUSEUM | | | PWRC |
| 36 | BRMX | BERKSHI | | | SCAC4 |
| 37 | BRMY | BRAMLEY, DONALD R | | | SCAC3 |
| 38 | BRMY | BRIMILY LOGISTICS INC | | | SCAC4 |