Alex McKinnon may refer to:
Alex McKinnon (ice hockey) (1895–1949), Canadian professional ice hockey player Alex McKinnon (baseball) (1856–1887), American baseball player Alex McKinnon (rugby union) (1878–c. 1944), Australian rugby union player Alex McKinnon (rugby league) (born 1992), Australian rugby league footballer Alex McKinnon (footballer) (1865–1935), Scottish footballer Alexander H. McKinnon (1904–1973), Canadian lawyer, judge and politician