| 1 | MOA | Air Moravia Czech Charter Airline Ltd. | Callsign: Moras, | CZ | AVCODES |
| 2 | MOA | Moana Airlines | Callsign: Moana, | NZ | AVCODES |
| 3 | MOA | Moscow Airlines, JSC | IATA: 7B, Callsign: Moscow Airlines, Ceased operations on 17 January 2011. Name changed from Atlant-Soyuz Airlines w.e.f. 17 September 2010. | RUS | AVCODES |
| 4 | MOAA | MOTOR CARRIER SERVICE INC | | | SCAC4 |
| 5 | MOAB | MORGAN TRANSPORT | | | SCAC4 |
| 6 | MOAC | MACH ONE (1) AIR SERVICES INC | | | SCAC4 |
| 7 | MOAD | MOORE, A ENTERPRISES INC | | | SCAC4 |
| 8 | MOAE | MORRIS, A. E | | | SCAC1 |
| 9 | MOAG | MORGAN, ANGELA INC | | | SCAC4 |
| 10 | MOAH | MONTERO SHIPPING CORP | | | SCAC4 |
| 11 | MOAJ | MODLIN, WILLIAM INC | | | SCAC4 |
| 12 | MOAK | MORRIS SEALCOAT & TRUCKING INC | | | SCAC4 |
| 13 | MOAL | MONSTER AESTHETICS | | | SCAC4 |
| 14 | MOAN | MOVIN ON TRANSPORTATION INC | | | SCAC4 |
| 15 | MOAO | MONTAG OIL INC | | | SCAC4 |
| 16 | MOAP | MOAPA VALLEY FREIGHT AND PASSENGER SERVICE | | | SCAC1 |
| 17 | MOAT | MOBILE SERVICE INC | | | SCAC4 |
| 18 | MOAU | MITSUI O.S.K. LINES LTD | | J | BIC |
| 19 | MOAU | MITSUI O S K LINES LTD | | | SCAC4 |
| 20 | MOAV | MACH ONE (1) AIR SERVICE INC (AIR F | | | SCAC4 |
| 21 | MOAW | MORTIMER & WALLACE INC | | | SCAC4 |
