Michael or Mike Hartley may refer to:
Mike Hartley (baseball) (born 1961), former Major League Baseball right-handed pitcher Michael Hartley (bobsleigh) (born 1946), Olympic bobsleigh competitor for Canada at the 1972 Winter Olympics Michael Hartley (footballer) (born 1993), Australian rules footballer Michael Hartley (rugby union), UAE rugby union player who competed at the 2011 Asian Five Nations Michael Hartley (high jumper), English high jumper who competed at the 2011 Commonwealth Youth Games Michael Carr-Hartley (born 1942), Kenyan Olympic sport shooter Mike Hartley (runner) (born 1952), British runner