East Makian - Language code (ETLW)
Mackay - Australia - Airport symbol (OAG)
Makeyevka - Former USSR - Seismograph station code, US Geological Survey - Closed (SEIS)
Marco Island, FL - Location identifier - FAA (FAAL)
Markal Boats, Friday Harbor, WA - Manufacturer code for watercraft hull identification number (USCG)
Milkyway Networks (TLAA)
Monky Aerotaxis SA - Mexico - ICAO designator (FAAC)