Michael Hart, Mike Hart, or Mickey Hart may refer to:
- Michael Hart (mayor) (c. 1814–1878), Mayor of Christchurch 1873–1874
- Michael Hart (political scientist) (born 1956), British academic at Exeter College, Oxford
- Michael Hart (rower) (born 1951), British rower and participant in 1972 Summer Olympics
- Michael Hart (footballer) (born 1980), Scottish footballer
- Michael Hart (judge) (1948–2007), British judge
- Michael H. Hart (born 1932), American physicist and futurist author
- Michael J. Hart (1877–1951), American politician in Michigan
- Michael S. Hart (1947–2011), American founder of Project Gutenberg
- Mickey Hart (born 1943), drummer and musicologist with the Grateful Dead
- Mike Hart (American football) (born 1986), American football player
- Mike Hart (poker player) (fl. c. 1990), American poker player
- Mike Hart (switch hitter) (born 1951), MLB outfielder for the Texas Rangers
- Mike Hart (left-handed hitter) (born 1958), MLB outfielder for the Minnesota Twins and Baltimore Orioles
- Mike Hart (singer/songwriter), English poet and singer/songwriter from Liverpool
- Michael Hart (Australian politician), member of the Legislative Assembly of Queensland
Famous quotes containing the words michael and/or hart:
“Every time an ashtray is missing from a hotel, they don’t come looking for you. But let a diamond bracelet disappear in France and they shout John Robie, the Cat. You don’t have to spend every day of your life proving your honesty, but I do.”
—John Michael Hayes (b.1919)
“Bewitched, bothered and bewildered am I.”
—Lorenz Hart (1895–1943)