MJ
- Emjay
- Jeep Comanche
- Jupiter mass
- Líneas Aéreas Privadas Argentinas
- M.J. Delfino
- MJ (Marvel Cinematic Universe)
- MJ (New York City Subway service)
- MJ (South Korean singer)
- MJ (album)
- MJ Acosta
- MJ Cole
- MJ Delaney
- MJ Erb
- MJ Hegar
- MJ Hibbett
- MJ Lee
- MJ Lenderman
- MJ Long
- MJ Mentz
- MJ Pelser
- MJ Williams
- MJ the Musical
- Mahan Mj
- Maillot jaune
- Manufacturers' Junction Railway
- Marwar Junction railway station
- Mary Jane Watson
- Mary Jane Watson (2002 film series character)
- Mary Jean Lastimosa
- Mary Joy Tabal
- Master of Jurisprudence
- Megajoule
- Men In Black II
- Michael Jackson
- Michael Jordan
- Mike Johnson
- Miss Cast Away and the Island Girls
- Mj Rodriguez
- The Municipal Journal
- West's Military Justice Reporter
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