| 1 | MLR | Midair Limited, Inc. | Callsign: Midliner, | LB | AVCODES |
| 2 | MLR | Mihin Lanka (Pvt) Ltd. | IATA: MJ, Callsign: Mihin Lanka, Ceased operations on 30 October 2016. | CL | AVCODES |
| 3 | MLR | Mineral Range R.R. Co. | 8/1920-7/1954 | | NAKINA |
| 4 | MLR | Mineral Range R.R. Co. | 4/38-1/52 | | NRHS |
| 5 | MLR | MINERAL RANGE RAILROAD CO. | | | PWRC |
| 6 | MLR | MILLER TRANSPORTATION INC | | | SCAC4 |
| 7 | MLRC | MULE TRAIN INC | | | SCAC4 |
| 8 | MLRF | MANRIQUE DE LARA, RAFAEL | | | SCAC4 |
| 9 | MLRL | MILLER, RANDALL COMPANY INC | | | SCAC4 |
| 10 | MLRM | MILLER, MARK TRUCKING INC | | | SCAC4 |
| 11 | MLRQ | MATERIAL TRANSPORT | | | SCAC4 |
| 12 | MLRR | MACLEOD, ROBERT W | | | SCAC4 |
| 13 | MLRS | MILLER, SOREN | | | SCAC4 |
| 14 | MLRU | LLC «MAXIMA LOGISTIC» | | RUS | BIC |
| 15 | MLRW | MLR TRANSPORT | | | SCAC4 |
| 16 | MLRY | MALLORY VAN & STORAGE INC | | | SCAC4 |
