| 1 | MOE | Mostarez Air | Callsign: Most Air, Ceased operations. | CZ | AVCODES |
| 2 | MOEC | MOODIE, C & S FARMS INC | | | SCAC4 |
| 3 | MOED | MOEDER OIL CO INC | | | SCAC4 |
| 4 | MOEE | MOELLER TRUCKING INC | | | SCAC4 |
| 5 | MOEI | MARCO ENTERPRISE INC | | | SCAC4 |
| 6 | MOEJ | METRO OVERLAND EXPRESS INC | | | SCAC4 |
| 7 | MOEK | MORRIS, EZEKIEL, TRANSPORTATION, INC | | | SCAC1 |
| 8 | MOEK | MORRIS, EZEKIEL TRANSPORTATION INC | | | SCAC4 |
| 9 | MOEKB | Moerser Kreisbahn | | D | TRAFFIC |
| 10 | MOEN | MOE OIL CO | | | SCAC4 |
| 11 | MOEP | METRO EAST SEABOARD TRANSPORTERS | | | SCAC4 |
| 12 | MOERS | Moerser Straßenbahn | | D | TRAFFIC |
| 13 | MOET | MOREY ENTERPRIESES INC | | | SCAC4 |
| 14 | MOEU | MITSUI O.S.K. LINES LTD | | J | BIC |
| 15 | MOEU | MITSUI O S K LINES LTD | | | SCAC4 |
| 16 | MOEX | Morgan Engineering, Koehring Production System Division AMCA International Corp. | added 10/1981; eliminated 10/1984 | | NAKINA |
| 17 | MOEX | Morgan Engineering, a Unit of the Equipment Systems Division, AMCA International Corp. | added 1/1976; 1/1980; eliminated 10/1981 | | NAKINA |
| 18 | MOEX | Morgan Engineering Co. | added 7/1963; 7/1965-1/1975; eliminated 1/1976 | | NAKINA |
| 19 | MOEX | Morgan Engineering Co. | added 7/63; 7/65-1/75 | | NRHS |
| 20 | MOEX | Morgan Engineering, a Unit of the Equipment Systems Division, AMCA International Corp. | 1/80; eliminated 10/81 | | NRHS |
| 21 | MOEX | Morgan Engineering, Koehring Production System Division AMCA International Corp. | added 10/81; eliminated 10/84 | | NRHS |
| 22 | MOEX | MORGAN ENGINEERING | | | PWRC |
| 23 | MOEX | Morgan Engineering | | | RSRV |
| 24 | MOEX | MORGAN ENGINEERING CO THE | | | SCAC4 |
| 25 | MOEZ | MITSUI OSK LINES LTD | | | SCAC4 |
