Airlines — M
- JNHM & N Aviation
- MAQMac Aviation
- MCNMac Dan Aviation Corporation
- MCFMAC Fotografica
- MCKMacair Airlines
- MCSMacedonian Airlines
- MTDMacKnight Airlines
- MDHMadina Air
- MJBMagic Blue Airlines
- MGRMagna Air
- MLHMahalo Air
- IRMMahan Air
- MZSMahfooz Aviation
- MATMaine Aviation
- MAJMajestic Airlines
- AKMMak Air
- MLGMalagasy Airlines
- MLXMalawi Express
- MKKMalaya Aviatsia Dona
- MASMalaysia Airlines
- MWIMalaysia Wings
- MAVMaldivo Airlines
- MAHMalév
- MAEMali Air
- VXPMali Air Express
- MTZMali Airways
- MLCMalila Airlift
- MXDMalindo Air
- MLSMall Airways
- SCWMalmo Aviation
- SCWMalmö Aviation
- LODMalmoe Air Taxi
- MACMalta Air Charter
- MWSMalta Wings
- MLBManaf International Airways
- MRGMANAG'AIR
- MDLMandala Airlines
- MDAMandarin Airlines
- MNOMango
- MHNManhattan Air
- MTOManitoulin Air Services
- MNRMann Air
- MYPMann Yadanarpon Airlines
- MANMannion Air Charter
- MTSMantrust Asahi Airways
- MNXManx Airlines
- MPJMAP-Management and Planung
- MADMaple Air Services
- MARMarch Helicopters
- MCPMarcopolo Airways
- MGIMarghi Air
- MRHMarham Flying Training Unit
- MRKMarkair
- MKOMarkoss Aviation
- MRWMars RK
- MCEMarshall Aerospace
- MSLMarsland Aviation
- XMAMartin Aviation Services
- MBEMartin-Baker
- MPHMartinair
- MRAMartinaire
- MFAMartyn Fiddler Associates
- MRSMarusya Airways
- MVNMarvin Limited
- M1FMaryland Air
- TRPMaryland State Police
- 1QAMarysya Airlines
- TFGMAS Airways
- MAAMasAir
- MTHMassachusetts Institute of Technology
- MSYMassey University School of Aviation
- MSWMaster Airways
- MPLMaster Planner
- LMJMasterjet
- MKDMAT Airways
- MAKMAT Macedonian Airlines
- MIAMauria
- MAIMauritania Airlines International
- MTWMauritania Airways
- MNVMauritanienne Aerienne Et Navale
- MRFMauritanienne Air Fret
- MWYMauritanienne Airways
- MDEMauritanienne De Transport Aerien
- MVRMaverick Airways
- MVLMavial Magadan Airlines
- MAIMax Avia
- MSFMax Sea Food
- MAXMax-Aviation
- MXLMaxair
- MXUMaximus Air Cargo
- MXJMaxjet Airways
- MXSMaxsus-Avia
- MXPMay Air Xpress
- MYDMaya Island Air
- MYIMayair
- MBSMbach Air
- MCAMCA Airlines
- MCHMcAlpine Helicopters
- MCCMCC Aviation
- MKLMcCall Aviation