Michael Hayes or Mike Hayes may refer to:

Politicians

  • Michael Hayes (politician) (1889–1976), Irish Fine Gael politician
  • Michael D. Hayes (born 1951), American member of Michigan House of Representatives

Military figures

  • Michael Joseph Hayes (1894–1918), U.S. Army officer killed in World War 1
  • J. Michael Hayes (), U.S. Marine Corps general

Others

  • Michael Angelo Hayes (1820–1877), Irish watercolourist who specialised in painting horses and military subjects
  • Michael Hayes (wrestler) (born 1959), American wrestler
  • Michael Hayes (mass shooter) (born 1964), North Carolina (USA) mass shooter whose case sparked controversy over the insanity defense
  • Michael Hayes (TV series), an American TV series
  • Mickie Most (Michael Peter Hayes, 1938–2003), English record producer
  • Mike Hayes (businessman), English businessman
  • Mike Hayes (fighter) (born 1980), American mixed martial artist
  • Michael Hayes (director) (1929–2014), British TV director
  • Michael Hayes (Canadian football) (born 1990), American gridiron football player