| 1 | BM | Air Sicilia S.p.A. | ICAO: SIC, Callsign: Air Sicilia, Ceased operations during 2004. Name changed from Air Sicilia S.R.L. | I | AVCODES |
| 2 | BM | Bayu Indonesia Air P.T. | ICAO: BYU, Callsign: Bayu, Designator BM recalled by IATA. Designator DD recalled by IATA | RI | AVCODES |
| 3 | BM | Thai Flying Service | IATA designator changed to TF* | T | AVCODES |
| 4 | BM | Societa Aero Trasporti Italiani S.p.A. (ATI) | ICAO: ATI, Callsign: ATI, Merged into Alitalia on 30 October 1994. | I | AVCODES |
| 5 | BM | Air Sicilia S.R.L. | ICAO: SIC, Callsign: Air Sicilia, Name changed to Air Sicilia S.p.A. | I | AVCODES |
| 6 | BM | Air Bee S.p.A. | ICAO: OBE, Suspended operations 10 September 2008. | I | AVCODES |
| 7 | BM | Master Top Linhas Aereas Ltda | ICAO: MST, Callsign: Master, IATA Prefix: 207, | BR | AVCODES |
| 8 | BM | British Midland Regional Ltd. d/b/a bmi Regional | ICAO: BMR, Callsign: Kittiwake, IATA Prefix: 480, Name changed to British Midland Regional Ltd. d/b/a flybmi w.e.f. 06 July 2018. | GB | AVCODES |
| 9 | BM | British Midland Regional Ltd. d/b/a flybmi | ICAO: BMR, Callsign: Kittiwake, IATA Prefix: 480, Ceased operations on 16 February 2019. Name changed from British Midland Regional Ltd. d/b/a bmi Regional w.e.f. 06 July 2018. | GB | AVCODES |
| 10 | BM | Bakhtar Afghan Airlines | ICAO: BFO, Callsign: Bakhtar, Founded as Bakhtar Alwatana in 1967. | AFG | AVCODES |
| 11 | BM | ST Rail System | 7/2000 | | NAKINA |
| 12 | BM | Boston and Maine Corp. | 7/2005 | | NAKINA |
| 13 | BM | Boston and Maine R.R. | added 1/1984; 1/1994 | | NAKINA |
| 14 | BM | Boston and Maine Corp. | 1/1975-1/1980 | | NAKINA |
| 15 | BM | Boston and Maine Corp., Robert W. Meserve and Benjamin H. Lacy, Trustees | eliminated 1/1984 | | NAKINA |
| 16 | BM | Boston and Maine R.R. | 4/1938-4/1970 | | NAKINA |
| 17 | BM | Boston and Maine R.R. | 4/38-4/70 | | NRHS |
| 18 | BM | Boston and Maine Corp. | 1/75-1/80 | | NRHS |
| 19 | BM | Boston and Maine R.R. | Jan-94 | | NRHS |
| 20 | BM | ST Rail System | Jul-00 | | NRHS |
| 21 | BM | *ST RAIL SYSTEM | | | PWRC |
| 22 | BM | +BOSTON & MAINE RR (PAN AM RAILWAYS FORMERLY GUILFORD RAIL SYSTEM) | | | PWRC |
| 23 | BM | Boston and Maine Railroad (Pan Am Railways) | | | RSRV |
| 24 | BM | BOSTON AND MAINE CORPORATION | | | SCAC4 |
| 25 | BM | Boston and Maine | | USA | TRAFFIC |
| 26 | BMA | British Midland Airways Ltd. d/b/a bmi | IATA: BD, Callsign: Midland, IATA Prefix: 236, Merged into British Airways. Name changed from British Midland Airways Ltd. | GB | AVCODES |
| 27 | BMA | British Midland Airways Ltd. | IATA: BD, Callsign: Midland, IATA Prefix: 236, Name changed to British Midland Airways Ltd. d/b/a bmi. ICAO Callsign changed from British Midland. | GB | AVCODES |
| 28 | BMA | bmi | IATA: BD | | ICAO1 |
| 29 | BMA | Bahnmuseum Augsburg e.V. | Augsburg | D | privat-bahn.de |
| 30 | BMA | British Midland Airways (bmi: British Midland International) | Real: BMA, BD | GB | TRAFFIC |
| 31 | BMAA | B & M TRANSPORTATION | | | SCAC4 |
| 32 | BMAB | B & M TRUCKING OF WNC LLC | | | SCAC4 |
| 33 | BMAC | BELTWAY MOVERS ASSOCIATES INC | | | SCAC3 |
| 34 | BMAC | BMA TRUCKING INC | | | SCAC4 |
| 35 | BMAE | BO MAR ENTERPRISES INC | | | SCAC3 |
| 36 | BMAG | BUILD MASTERS TRUCKING INC | | | SCAC4 |
| 37 | BMAH | BERMUDA ATLANTIC LINE LTD | | | SCAC3 |
| 38 | BMAH | BMA B V | | | SCAC4 |
| 39 | BMAI | BAMA STAR INC | | | SCAC3 |
| 40 | BMAI | BUSCH MARINE INC | | | SCAC4 |
| 41 | BMAK | B & M TRANSPORTATION LLC | | | SCAC4 |
| 42 | BMAL | BROOMALL TRUCKING INC | | | SCAC3 |
| 43 | BMAL | BROOMALL TRUCKING INC | | | SCAC4 |
| 44 | BMAM | BAMA TRANSPORT INC | | | SCAC3 |
| 45 | BMAN | BALMAIN, THOMAS A | | | SCAC3 |
| 46 | BMAO | BMC AUTO TRANSIT | | | SCAC3 |
| 47 | BMAO | BM SHIPPING GROUP USA INC | | | SCAC4 |
| 48 | BMAQ | B & N MOTOR SERVICE | | | SCAC3 |
| 49 | BMAR | BARRY MARITIME LTD | | | SCAC3 |
| 50 | BMAS | BELL MOVING AND STORAGE INC | | | SCAC4 |
| 51 | BMAT | BALMAIN TRUCKING | | | SCAC3 |
| 52 | BMAV | BIG M TRANSPORTATION INC | | | SCAC4 |
| 53 | BMAY | BATCO MANUFACTURING | | | SCAC4 |
| 54 | BMAZ | BETTER ASSET MANAGEMENT via TRANSAMERICA LEASING INC. | | | PWRC |
| 55 | BMAZ | Better Asset Management (TAL International) | | | RSRV |
| 56 | BMB | BROWNVILLE & MATAMOROS BRIDGE CO. | | | PWRC |
| 57 | BMB | Bergische Museumsbahnen e.V. | City: Wuppertal | D | TRAFFIC |
| 58 | BMBA | BAMBOO ABBOTT INC | | | SCAC3 |
| 59 | BMBA | BLUE MARINE CO LTD MARSHALL ISLANDS | | | SCAC4 |
| 60 | BMBB | BLACK MAMBO TRUCKING INC | | | SCAC4 |
| 61 | BMBC | BEEMSTERBOER CO INC | | | SCAC3 |
| 62 | BMBG | BROWNSVILLE MATAMOROS BRIDGE CO | | | SCAC3 |
| 63 | BMBH | BARRETT MOBILE HOME TRANSPORT INC ( | | | SCAC3 |
| 64 | BMBI | BERMAN BROS IRON & METAL CO INC | | | SCAC3 |
| 65 | BMBL | BLUE MOUNTAIN BUS LINES | | | SCAC3 |
| 66 | BMBO | BAMBOO TRUCKING INC | | | SCAC3 |
| 67 | BMBP | BIG MARTIN TRUCKING | | | SCAC4 |
| 68 | BMBQ | BELTIMBER SHIPPING COMPANY LTD. | | | SCAC3 |
| 69 | BMBR | BAUMBERGER & SONS INC | | | SCAC3 |
| 70 | BMBR | BAUMBERGE | | | SCAC4 |
| 71 | BMBV | BLUE MOUNTAIN TRANSPORT LLC | | | SCAC4 |
| 72 | BMC | BMC Otomotiv Sanayi ve Ticaret A.S. | | TR | TRAFFIC |
| 73 | BMCA | B & M CONSOLIDATION CO | | | SCAC3 |
| 74 | BMCA | BRAVO MOTOR CARRIERS INC | | | SCAC4 |
| 75 | BMCB | BROOKLINE MOVING CO INC | | | SCAC3 |
| 76 | BMCC | BMC TRANSPORTATION CO | | | SCAC3 |
| 77 | BMCD | BMC FORWARDING INC | | | SCAC3 |
| 78 | BMCD | BD MOTOR CO | | | SCAC4 |
| 79 | BMCE | B & M CARTAGE INC | | | SCAC3 |
| 80 | BMCE | BIL-MAC EXPRESS INC | | | SCAC4 |
| 81 | BMCF | BERRY MCCARTHY FORWARDING CO | | | SCAC3 |
| 82 | BMCG | B & M CARTAGE INC | | | SCAC3 |
| 83 | BMCH | BUFFALO MOTOR COACH INC | | | SCAC3 |
| 84 | BMCI | B M & C DELIVERY INC | | | SCAC3 |
| 85 | BMCJ | B & M CARRIERS INC | | | SCAC4 |
| 86 | BMCL | BLASER & MERICLE INC | | | SCAC4 |
| 87 | BMCM | B & M TRANSFER CO | | | SCAC3 |
| 88 | BMCN | BRAGUNTER MASONARY CONTRATORS INC | | | SCAC3 |
| 89 | BMCN | BM CARRIER CORP | | | SCAC4 |
| 90 | BMCO | BLUE MESA CONTAINER SERVICE | | | SCAC3 |
| 91 | BMCORP | Bong Mine Corporation | | LB | TRAFFIC |
| 92 | BMCP | BEV-MAC CORP | | | SCAC3 |
| 93 | BMCP | BOARDMAN CHIP CO INC | | | SCAC4 |
| 94 | BMCQ | B & M CARTAGE CO | | | SCAC3 |
| 95 | BMCQ | BEMCO INC | | | SCAC4 |
| 96 | BMCR | B & M CARRIERS LIMITED | | | SCAC3 |
| 97 | BMCS | BELINDER MARINE CORPORATION SA | | | SCAC3 |
| 98 | BMCT | BI MART COMPANY, THE | | | SCAC3 |
| 99 | BMCU | BENMA LOGISTICS CO.,LTD | | ROK | BIC |
| 100 | BMCW | BROAN MANUFACTURING CO INC | | | SCAC3 |
