Michael Dunn or Mike Dunn may refer to:

• Michael Dunn (actor) (1934-1973), American actor and singer
• Michael Dunn (baseball) (born 1985), Major League Baseball pitcher
• Michael Dunn (nutritionist), director of Brigham Young University's Department of Nutrition, Dietetics and Food Science
• Michael T. Dunn (born 1977), actor and film director
• Michael V. Dunn, commissioner of the Commodity Futures Trading Commission
• Mike Dunn (snooker player) (born 1971), English snooker player
• Mickey Dunn

[ Source: Wikipedia ]