| M0 | MNG | Aero Mongolia | |
| M2 | MZS | Mahfooz Aviation | |
| M3 | TUS | 549 | ABSA Aerolinhas Brasileiras |
| M3 | WJA | Westjet Airlines | |
| M4 | AXX | 743 | Avioimpex |
| M6 | AJT | 810 | Amerijet |
| M8 | MSC | 608 | Moscow Airways |
| M8 | MKN | Mekong Airlines | |
| M9 | MOD | 548 | ModiLuft |
| M9 | MSI | 011 | Motor Sich JSC Airlines |
| MA | MAH | 182 | Malev Hungarian Airlines |
| MB | MNB | 716 | MNG Airlines |
| MD | MDG | 258 | Air Madagascar |
| ME | MEA | 076 | Middle East Airlines |
| MF | CXA | 731 | Xiamen Airlines |
| MG | MGM | MGM Grand Air | |
| MG | CCP | Champion Air | |
| MG | Mediterranean Air Services | ||
| MH | MAS | 232 | MASKargo |
| MI | SLK | 629 | SilkAir |
| MI | MDL | 888 | Mandala Airlines |
| MJ | LPR | 069 | LAPA Lineas Aereas Privadas Argentinas |
| MJ | MLR | Mihin Lanka | |
| MK | MAU | 239 | Air Mauritius |
| ML | AEK | 802 | Aero Costa Rica |
| ML | ETC | Trans Attico | |
| MM | SAM | 334 | Sociedad Aeronautica de Medellin (SAM) |
| MM | MMZ | Euro Atlantic Airways | |
| MN | CAW | 161 | Kulula.com |
| MO | CAV | 622 | Calm Air International ltd |
| MO | MOS | 931 | MISR Overseas Airways |
| MP | MPH | 129 | Martinair |
| MR | MRT | 174 | Air Mauritanie |
| MS | MSR | 077 | Egyptair |
| MT | JMC | 885 | jmc airlines |
| MT | FCL | Flying Colours | |
| MT | TCX | 885 | Thomas Cook Airlines |
| MU | CES | 781 | China Eastern Airlines |
| MV | RML | 904 | Armenian International Airways |
| MW | MAY | Maya Airways | |
| MX | MXA | 132 | Mexicana |
| MY | MAA | 865 | Mas Air |
| MY | MXJ | 386 | Maxjet Airways |
| MZ | MNA | 621 | Merpati Nusantara |