| 10201 | BRRX | Brooklyn Resource Recovery | added 10/96; eliminated 1/98; 7/2000 | | NRHS |
| 10202 | BRRX | *BLUE RAPIDS RAILWAY | | | PWRC |
| 10203 | BRRX | *BORDEN RESINITE | | | PWRC |
| 10204 | BRRX | +BROOKLYN RESOURCE RECOVERY INC. | | | PWRC |
| 10205 | BRRX | Brooklyn Resource Recovery | | | RSRV |
| 10206 | BRRX | BROOKLYN RESOURCE RECOVERY INC. | | | SCAC4 |
| 10207 | BRRY | BARRY TRANSFER & STORAGE CO INC | | | SCAC3 |
| 10208 | BRRY | BARRY TRUCKING INC | | | SCAC4 |
| 10209 | BRS | Forca Aerea Brasileira (F.A.B.) | Callsign: FAB, | BR | AVCODES |
| 10210 | BRS | Brazilian Air Force | | | ICAO1 |
| 10211 | BRS | BATON ROUGE SOUTHERN RAILROAD | | | SCAC4 |
| 10212 | BRS | Busverkehr Ruhr-Sieg GmbH | | D | TRAFFIC |
| 10213 | BRSB | BURNS, M TRUCKING CO | | | SCAC3 |
| 10214 | BRSB | BARRERA AULD, SEBASTIAN | | | SCAC4 |
| 10215 | BRSC | BURNS, RALPH H & SONS, INC | | | SCAC3 |
| 10216 | BRSD | BRITES CARTAGE | | | SCAC3 |
| 10217 | BRSE | BRISCO ENTERPRISES | | | SCAC3 |
| 10218 | BRSG | BRODIN SHIPPING AB | | | SCAC3 |
| 10219 | BRSH | BIRDIE SHIPPING LIMITED | | | SCAC3 |
| 10220 | BRSH | BRETTON RIDGE SHIPPING COMPANY LIMI | | | SCAC4 |
| 10221 | BRSI | BARNETT SERVICES INC | | | SCAC3 |
| 10222 | BRSL | BLUE RIVER SAFARIS | | | SCAC3 |
| 10223 | BRSL | BAIRD BROS | | | SCAC4 |
| 10224 | BRSM | BRADYS MOVING & STORAGE | | | SCAC3 |
| 10225 | BRSM | BRADYS MOVING & STORAGE | | | SCAC4 |
| 10226 | BRSM | Bruce R. Smith Limited | | USA | TRAFFIC |
| 10227 | BRSN | BRITSCH INC | | | SCAC4 |
| 10228 | BRSO | BRASILEIRO, LLOYD | | | SCAC3 |
| 10229 | BRSP | BURGESS RANCH | | | SCAC4 |
| 10230 | BRSQ | BELLEW, RAY & SONS INC | | | SCAC3 |
| 10231 | BRSR | BLUE RIDGE SCENIC RAILWAY | | | PWRC |
| 10232 | BRSR | Blue Ridge Scenic Railway | | | RSRV |
| 10233 | BRSS | B & R SERVICES | | | SCAC3 |
| 10234 | BRST | BRISTOL COUNTY MOVERS | | | SCAC3 |
| 10235 | BRSU | BASF SE LUDWIGSHAFEN | | D | BIC |
| 10236 | BRSU | BRIDGE SHIPPING (PTY) LTD | | | SCAC3 |
| 10237 | BRSW | BRUNSWICK CORPORATION | | | SCAC4 |
| 10238 | BRSX | High Sierra Transportation, LLC | added 10/2006; eliminated 4/2007 | | NAKINA |
| 10239 | BRSX | *BRANSON SCENIC RAILWAY | | | PWRC |
| 10240 | BRSX | +HIGH SIERRA TRANSPORTATION, LLC | | | PWRC |
| 10241 | BRSX | SOUTHWEST RAIL INDUSTRIES INC | | | SCAC4 |
| 10242 | BRT | British Regional Airlines Limited | IATA: TH, Callsign: British, Name changed to British Airways CitiExpress Limited Merged with Brymon and British Airways Regional 31 March 2002. Formerly Manx Airlines (Europe) Ltd. | GB | AVCODES |
| 10243 | BRT | British Regional Airlines Limited | IATA: JE, ICAO designator changed from MXE / IATA designator changed to TH | GB | AVCODES |
| 10244 | BRT | British Airways CitiExpress Limited | IATA: TH, Callsign: British, Name change to BA Connect Limited on 01 February 2006. Name changed from British Regional Airlines Limited. Formerly Manx Airlines (Europe) Ltd. | GB | AVCODES |
| 10245 | BRT | BA Connect Limited | IATA: TH, Callsign: British, Name change from British Airways CitiExpress Limited w.e.f. 01 February 2006. Merged into Flybe on 25 March 2007. | GB | AVCODES |
| 10246 | BRT | London Helicopter Centres Ltd | Callsign: British, Name changed to BIH (Onshore) Ltd. | GB | AVCODES |
| 10247 | BRT | BIH (Onshore) Ltd | Callsign: British, Name changed to British International Helicopter Services Limited. Name changed from London Helicopter Centres Ltd. | GB | AVCODES |
| 10248 | BRT | British International Helicopter Services Limited | Callsign: British, Name changed from BIH (Onshore) Ltd. w.e.f. 12 january 2018. Name changed from London Helicopter Centres Ltd. w.e.f. 29 April 2014. | GB | AVCODES |
| 10249 | BRT | British Regional Airlines | | | ICAO1 |
| 10250 | BRTA | BERTA BROS TRANSPORTATION | | | SCAC3 |
| 10251 | BRTA | BROTHERS TRUCK LINE | | | SCAC4 |
| 10252 | BRTB | BRITT TRUCKING COMPANY | | | SCAC3 |
| 10253 | BRTC | BLUE ROCK TRANSPORTATION CO. | | | PWRC |
| 10254 | BRTC | BROWN TRANSFER COMPANY | | | SCAC3 |
| 10255 | BRTC | BROWN TRANSFER COMPANY | | | SCAC4 |
| 10256 | BRTD | BRITTON MOTOR SERVICE INC | | | SCAC3 |
| 10257 | BRTE | BARRETTE, SYLVAIN INC | | | SCAC4 |
| 10258 | BRTF | BROWNS TRANSFER | | | SCAC3 |
| 10259 | BRTG | BARRETT, G | | | SCAC3 |
| 10260 | BRTG | Brenntag CEE GmbH | | AT | VKM |
| 10261 | BRTH | BARTHOLOMEW, JOHN B | | | SCAC3 |
| 10262 | BRTH | BARTHOLOMEW, JOHN B | | | SCAC4 |
| 10263 | BRTI | B R TRUCKING CO INC | | | SCAC3 |
| 10264 | BRTI | B R TRUCKING CO INC OF NORTH BERGEN | | | SCAC4 |
| 10265 | BRTJ | BARR TRANSPORTATION CORP | | | SCAC3 |
| 10266 | BRTK | B & R TUBGRINDING LIMITED | | | SCAC4 |
| 10267 | BRTL | BROOKS TRUCK LINE | | | SCAC3 |
| 10268 | BRTM | BERT TRANSMISSION | | | SCAC4 |
| 10269 | BRTN | BARTON TRUCK LINES INC | | | PWRC |
| 10270 | BRTO | BRYANTON TRANSPORT | | | SCAC4 |
| 10271 | BRTP | BRANTLEY TRUCKING, INC | | | SCAC3 |
| 10272 | BRTQ | BARTON, ROBERT | | | SCAC3 |
| 10273 | BRTQ | BURTT, ALLISON B | | | SCAC4 |
| 10274 | BRTR | BLUE ROCK TRANSPORTATION CO. | | | PWRC |
| 10275 | BRTR | BLUE RIDGE TRANSFER COMPANY INCORPO | | | SCAC3 |
| 10276 | BRTR | BROWN, RON TRANSPORT | | | SCAC4 |
| 10277 | BRTS | BREITEN TRUCKING | | | SCAC3 |
| 10278 | BRTT | BRIGHT TRANSPORTATION, INC. | | | SCAC3 |
| 10279 | BRTT | BRIGHT TRANSPORTATION LP | | | SCAC4 |
| 10280 | BRTU | HALCYON TANKERS 2022 LTD | | GB | BIC |
| 10281 | BRTU | BRITISH TRAFFIC & ELECTRIC CO. | | | SCAC3 |
| 10282 | BRTU | GROUPE SAMAT UK LTD | | | SCAC4 |
| 10283 | BRTV | BRANDT TRANSPORT SERVICES, LLC | | | SCAC4 |
| 10284 | BRTW | BRIARTOWN EXPRESS CORP | | | SCAC4 |
| 10285 | BRTX | BELLMAN RIVER TERMINAL, INC. | | | PWRC |
| 10286 | BRTX | BRANDT ROAD RAIL CORPORATION | | | SCAC4 |
| 10287 | BRU | Belavia | IATA: B2, Callsign: Belarus Avia, IATA Prefix: 268, ICAO callsign changed to Belavia | BY | AVCODES |
| 10288 | BRU | Belavia | IATA: B2, Callsign: Belavia, IATA Prefix: 268, ICAO callsign changed from Belarus Avia | BY | AVCODES |
| 10289 | BRU | Belavia Belarusian Airlines | IATA: B2 | | ICAO1 |
| 10290 | BRU | SBB Brünigbahn | | CH | TRAFFIC |
| 10291 | BRUA | BRUENGER, M & CO, INC | | | SCAC3 |
| 10292 | BRUB | BRUDER, BILL INC | | | SCAC3 |
| 10293 | BRUC | BRUCKMANS TRUCKING | | | SCAC4 |
| 10294 | BRUD | BRENDANS TRUCKING LLC | | | SCAC4 |
| 10295 | BRUE | BUCKNER TRUCKING AND LOGISTICS | | | SCAC4 |
| 10296 | BRUECKNER | Reisedienst Brückner | | D | TRAFFIC |
| 10297 | BRUG | BARENBRUG USA INC | | | SCAC4 |
| 10298 | BRUH | BRUNO & DELLA, INC | | | SCAC3 |
| 10299 | BRUI | BRU-GINA TRUCKING CO | | | SCAC3 |
| 10300 | BRUI | BRUIN EXPRESS TRUCKING | | | SCAC4 |
