John McCormack may refer to:
Sportspeople Cec McCormack or John Cecil McCormack (1922–1995), English footballer John McCormack (ice hockey) (1925–2017), Canadian ice hockey player John McCormack (boxer) (1935–2014), Scottish boxer John McCormack (diver) (1925-1987), American Olympic diver Young McCormack or John McCormack (born 1944), Irish boxer John McCormack (footballer, born 1955), Scottish football player and manager John McCormack (footballer, born 1965), Scottish football player John McCormack (Irish footballer) (fl. 1970s–1980s) John McCormack (racing driver) (fl. 1970s), Australian John McCormack (baseball) (fl. 1980s-2010s), American college baseball coach
Others John MacCormac (1791–1865), Irish timber merchant Count John McCormack (tenor) (1884–1945), Irish tenor John W. McCormack (1891–1980), politician from Massachusetts, Speaker of the House of Representatives, 1962–1971 John Edward McCormack (1917–1953), lawyer and political figure in Saskatchewan John McCormack (bishop) (1921–1996), Catholic bishop of the Diocese of Meath, Ireland John Brendan McCormack (1935–2021), Catholic bishop of the Diocese of Manchester, New Hampshire John McCormack (Ohio politician) (born 1944/1945), former member of the Ohio House of Representatives John McCormack (journalist), American political journalist
See also Jack McCormack (disambiguation) John McCormick (disambiguation)