Others
- Michael Smith (judge) (1740–1809), Irish judge
- M. G. Smith (Michael G. Smith, 1921–1993), Jamaican poet and social anthropologist
- Michael Smith (bishop) (born 1940), Catholic Bishop of Meath, Ireland
- Mike Sharwood Smith (born 1942), linguist
- Michael John Smith (espionage) (born 1948), British Cold War spy
- Michael A. Smith (born 1954), philosopher at Princeton University
- Michael Acton Smith (born 1973 or 1974), CEO and founder of online games developer and entertainment company Mind Candy
- Michael Smith (chef), Canadian celebrity chef
- Sgt. Michael J. Smith, a U.S. army dog handler convicted for prisoner abuse at Abu Ghraib prison
- Valentine Michael Smith, chief character in Stranger in a Strange Land
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