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- Manuel Weber (born 1985), Austrian football player
- Marc Weber (disambiguation)
- Marco Weber (born 1982), German speed skater
- Mark Weber, director of holocaust denial organization
- Marianne Weber, sociologist and women's rights activist
- Mary E. Weber (born 1963), American former astronaut
- Mauricio Weber (born 1982), Uruguayan football player
- Max Weber (1864–1920), sociologist
- Max Weber (artist) (1881–1961), American cubist painter
- Max Weber (politician) (1897–1974), Swiss politician; former member of the Swiss Federal Council
- Max Carl Wilhelm Weber (1852 – 1937), German-Dutch zoologist and biogeographer
- Michel Weber, philosopher
- Michael Weber (1966–1991), Australian musician; lead guitarist of punk/indie rock band, Seminal Rats, of Melbourne
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