| 1 | MBS | Mbachi Air/Ground Services Limited | Callsign: Mbachi Air, | MW | AVCODES |
| 2 | MBS | Mbach Air | | | ICAO1 |
| 3 | MBS | Montafonerbahn | | A | TRAFFIC |
| 4 | MBS | Montafonerbahn AG | | AT | VKM |
| 5 | MBSA | MINOT BUILDERS SUPPLY ASSOCIATION | | | SCAC4 |
| 6 | MBSC | MAR-BAX SHIRT CO INC | | | SCAC4 |
| 7 | MBSE | MUEBLES SEPULVEDA VILLAREAL SA DE C | | | SCAC4 |
| 8 | MBSG | METRO BOBCAT SALES | | | SCAC4 |
| 9 | MBSI | MARTINI BROKERAGE SERVICES INC | | | SCAC4 |
| 10 | MBSL | MetroBus St.Louis | | USA | TRAFFIC |
| 11 | MBST | MC BUSINESS SOLUTIONS | | | SCAC4 |
| 12 | MBSU | M S D LEVANT SHIPPING S L | | | SCAC4 |
| 13 | MBSX | Mid-South Bulk Services, Inc. | added 4/2000; 7/2000-7/2005 | | NAKINA |
| 14 | MBSX | M.B. Suydam Division, Pittsburgh Plate Glass Co. | 4/1947-1/1952; eliminated 4/1954; 7/1954 | | NAKINA |
| 15 | MBSX | M.B. Suydam Co. | 7/1930-1/1946 | | NAKINA |
| 16 | MBSX | M.B. Suydam Co. | Apr-38 | | NRHS |
| 17 | MBSX | M.B. Suydam Division, Pittsburgh Plate Glass Co. | 1/52; eliminated 4/54 | | NRHS |
| 18 | MBSX | Mid-South Bulk Services, Inc. | added 4/2000; 7/2000 | | NRHS |
| 19 | MBSX | *M. B. SUYDAM DIV., PITTSBURGH PLATE GLASS CO. | | | PWRC |
| 20 | MBSX | +MID-SOUTH BULK SERVICES, INC. | | | PWRC |
| 21 | MBSX | Mid-South Bulk Services | | | RSRV |
| 22 | MBSX | MID-SOUTH BULK SERVICES INC | | | SCAC4 |
| 23 | MBSY | MCGRATH, B & SONS LTD | | | SCAC4 |
