BEM or Bem may refer to:

Acronyms Baptism, Eucharist and Ministry (the Lima-Document of 1982) Black and ethnic minority, persons or groups Blade element momentum theory, a model for turbine physics "Block, element, modifier", a Cascading Style Sheets authoring methodology Board of Engineers Malaysia Borneo Evangelical Mission, a Christian missionary organisation Boundary element method, a numerical analysis method using computation Brevet état-major, a military diploma in France and Belgium British Empire Medal, a British medal awarded for meritorious civil or military service Brotherhood of Evil Mutants, an organization in the fictional X-Men universe Bug-eyed monster, a stock character in science fiction Bangkok Expressway and Metro Public Company Limited, a Thai transportation operator

People People with the given name Bem Bem Le Hunte (born 1964), author who has published internationally

People with the surname Bem Daryl Bem (born 1938), social psychologist at Cornell University Józef Bem (1794–1850), Polish general and a national hero of Poland and Hungary Pavel Bém (born 1963), Czech politician Sandra Bem (1944–2014), Pennsylvanian psychologist known for many of her works in androgyny Elisabeth Boehm or Elisaveta Merkuryevna Bem (1843–1914), Russian painter

People with the nickname or pen name Bem Bernie Mireault (born 1961), who uses the pen name Bem, a French-Canadian comic book artist and writer

Art, entertainment, and media BEM (originally called Bemusing Magazine), a British comics fanzine published by Martin Lock from 1973 to 1982 "Bem" (Star Trek: The Animated Series), a 1974 episode of the animated television series Star Trek Rev Bem, a character in Andromeda TV series Humanoid Monster Bem, a 1968–1969 anime re-made in 2006 and 2019

Places Bem, Missouri, a community in the United States

See also BME (disambiguation)