CMJ was a music events/online media company which hosted an annual festival in New York City

CMJ may also refer to:

• Central Motorway Junction, motorway interchange in Auckland, New Zealand
• Christopher Martin-Jenkins (1945–2013), English cricket journalist and broadcaster
• Church's Ministry Among Jewish People, an Anglican church organisation
• CMJ University, Chandra Mohan Jha University, India
• College Mathematics Journal, a journal of the Mathematical Association of America
• Computer Music Journal, quarterly academic journal covering digital audio signal processing and electroacoustic music
• The Cormac McCarthy Journal, an academic journal dedicated to the works of American author Cormac McCarthy
• Qimei Airport (IATA airport code), Cimei, Penghu, Taiwan
• CMJ ammo, full metal jacket ammunition with cupronickel jacket

This disambiguation page lists articles associated with the title CMJ.
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