Michael Williams or Micheal Williams may refer to:
- Michael Williams (MP) (1785–1858), MP for West Cornwall and owner of Caerhays castle
- Sir Michael S. Williams (1911–1984), British diplomat
- Michael J. Williams (politician) (born 1929), Trinidad and Tobago politician and businessman, acting president 1986–1987
- Michael Williams, Baron Williams of Baglan (1949–2017), British diplomat and United Nations special coordinator for Lebanon
- Michael L. Williams (born 1953), Texas railroad commissioner; departing Texas education commissioner
- Micheal R. Williams (born 1955), American politician from Tennessee
- Michael Williams (Georgia politician) (born 1973), Republican member of the Georgia State Senate
- Michael John Williams (born 1979), congressional candidate for the 5th District of Connecticut
Other sports
- Michael Williams (figure skater) (born 1947), British ice skater
- Michael Williams (boxer) (born 1962), American boxer and actor
- Michael Williams (athlete) (born 1964), Vincentian sprinter
- Micheal Williams (born 1966), American basketball player
- H. Michael Williams (fl. 2010s), American athletic director
- Michael Williams (footballer) (born 1988), Montserattian footballer
- MJ Williams (Michael Jordan Williams, born 1995), Welsh footballer
- Michael Williams (runner, born 1989), American middle-distance runner and winner of the 2013 NCAA DI distance medley relay championship
- Michael Williams (runner, born 1971), Jamaican middle-distance runner and winner of the 1995 800 meters at the NCAA Division I Indoor Track and Field Championships
- Michael Williams, defendant in United States v. Williams (2008)
- Michael Williams, academic in Indigenous Australian studies whose historical framework influenced Wesley Enoch's play The 7 Stages of Grieving
- Michael Williams (bishop), American Anglican bishop and retired U.S. Air Force chaplain
- Michael Williams (geographer) (1935–2009), Welsh historical geographer
- Michael Williams (philosopher) (born 1947), professor of philosophy at Johns Hopkins University
- Michael Ann Williams (born 1953), American folklorist
- Michael Duryea Williams (born 1957), American physicist
- Michael Ingouville Williams (born 1946), lord-lieutenant of East Lothian, Scotland
- Michael J. Williams (general) (born 1943), retired United States Marine Corps general
- Michael Paul Williams (born 1958), American journalist
- Michael R. Williams, president of the University of North Texas Health Science Center