| 1 | MTO | Manitoulin Air Services Ltd. | Callsign: Manitoulin, | CDN | AVCODES |
| 2 | MTO | Marathon Airlines | IATA: O8, Callsign: Marathon, | GR | AVCODES |
| 3 | MTO | Manitoulin Air Services | | | ICAO1 |
| 4 | MTOB | MARTIN TRANSPORTATION SERVICES INC | | | SCAC4 |
| 5 | MTOD | MASON TRANSPORTATION CO | | | SCAC4 |
| 6 | MTOE | M/T TRANSPORTATION INC | | | SCAC4 |
| 7 | MTOG | MAXIMUS TRANSPORTATION AND LOGISTIC | | | SCAC4 |
| 8 | MTOH | MIREAULT TRANSPORT | | | SCAC4 |
| 9 | MTOM | MELTON TRANSPORTATION, INC | | | SCAC1 |
| 10 | MTOM | MUNOZ TRUCKING | | | SCAC4 |
| 11 | MTON | MCNAMARA TRUCKING LLC | | | SCAC4 |
| 12 | MTOO | METALICO TRANSPORT INC | | | SCAC4 |
| 13 | MTOP | MATHISEN OIL CO INC | | | SCAC4 |
| 14 | MTOR | MOTORWAYS TRANSPORT LTD | | | SCAC4 |
| 15 | MTOU | TPS RENTAL SYSTEMS LIMITED | | GB | BIC |
| 16 | MTOU | METANO CONTAINER LTD | | | SCAC4 |
| 17 | MTOY | METRO TRUCKING OF ATLANTA LLC | | | SCAC4 |
