MJ

MJ may refer to:

Fictional characters

M.J. Delfino, in Desperate Housewives
Mary Jane Watson, in Marvel comics
- Mary Jane Watson (2002 film series character), the film adaptation of the character
MJ (Marvel Cinematic Universe), a character in the Marvel Cinematic Universe
Agent MJ, in the film Miss Cast Away and the Island Girls, played by Michael Jackson

Mary Jane (disambiguation) § People
MJ (South Korean singer) (Kim Myung-jun, born 1994), a South Korean singer, actor, and model
MJ Acosta (fl. from 2016), a Dominican-American sports reporter
MJ Cole (born 1973), English DJ and record producer
MJ Delaney, British television director
MJ Erb (born 1994), American long-distance runner
MJ Hegar (born 1976), American U.S. Air Force veteran and former political candidate
MJ Hibbett (born 1970), English guitarist singer-songwriter
Mary Jean "MJ" Lastimosa (born 1987), Filipina actress and beauty pageant titleholder
MJ Lee (born 1987), American political correspondent
MJ Lenderman (born 1999), American musician
MJ Long (1939–2018), American architect, lecturer and author
MJ Mentz (born 1982), South African rugby player
MJ Pelser (born 1998), South African rugby player
Mj Rodriguez (born 1991), American actress and singer
Mary Joy "MJ" Tabal (born 1989), Filipina marathon runner
MJ Williams (born 1995), Welsh footballer
Mahan Mj (born 1968), Indian mathematician and monk
Michael Jackson (1958–2009), American singer, songwriter, and dancer
- MJ the Musical, a 2021 Broadway musical centered on Michael Jackson
  - MJ (album), the cast album to the musical
Michael Jordan (born 1963), American businessman and former professional basketball player
Mike Johnson (born 1972), Speaker of the United States House of Representatives since 2023

Manufacturers' Junction Railway, near Cicero, Illinois, U.S., reporting mark MJ
Líneas Aéreas Privadas Argentinas, a former Argentinian airline, IATA airline code MJ
Jeep Comanche, designated MJ, a pickup truck
MJ (New York City Subway service), a defunct subway service in New York City, US

The MJ, a short name for The Municipal Journal, a United Kingdom publication about local democracy and civic administration
Maillot jaune or yellow jersey, worn by the leader of the Tour de France cycling stage race
Master of Jurisprudence, a master's degree
West's Military Justice Reporter (cited as M.J.), official reporter of the U.S. Court of Appeals for the Armed Forces
Short for Mary Jane, slang for marijuana