| 1 | MLM | Millennium Air Corporation (MAC) | Callsign: Millennium, | PA | AVCODES |
| 2 | MLM | Comlux Malta Ltd | Callsign: Luxmalta, | M | AVCODES |
| 3 | MLMC | MUTUAL MATERIALS CO | | | SCAC4 |
| 4 | MLMF | MILEMASTER | | | SCAC4 |
| 5 | MLMG | MULEME, MATHIAS GALLERY INC | | | SCAC4 |
| 6 | MLMK | M L M TRUCKING | | | SCAC4 |
| 7 | MLMO | MALT-O-MEAL COMPANY INC | | | SCAC4 |
| 8 | MLMT | MLM TRUCKING & LOGGING INC | | | SCAC4 |
| 9 | MLMU | MOOSE TANK PARTS | | NL | BIC |
| 10 | MLMW | MILITARY MOVERS INC | | | SCAC4 |
| 11 | MLMX | Metal Management Inc. | 7/2005 (not listed) | | NAKINA |
| 12 | MLMX | Morrison Grain Co., Inc. | added 7/1974; 1/1975-1/1980; eliminated 4/1987 | | NAKINA |
| 13 | MLMX | Morrison Grain Co., Inc. | added 7/74; 1/75-1/80; eliminated 4/87 | | NRHS |
| 14 | MLMX | METAL MANAGEMENT, INC. [MORRISON GRAIN CO.] | | | PWRC |
| 15 | MLMX | Morrison Grain (Metal Management) | | | RSRV |
| 16 | MLMX | METAL MANAGEMENT INC | | | SCAC4 |
| 17 | MLMX | Metal Management Inc. | | USA | TRAFFIC |
| 18 | MLMY | MILLE LACS OIL | | | SCAC4 |
