John McCarthy may refer to:
Government John George MacCarthy (1829–1892), member of parliament for Mallow constituency, 1874–1880 John McCarthy (Irish politician) (1862–1893), member of parliament for the Mid Tipperary constituency, 1892–1893 John H. McCarthy (1850–1908), U.S. representative from New York John McCarthy (Nebraska politician) (1857–1943), Nebraska Republican politician John F. McCarthy (1924–1981), California Republican senator John J. McCarthy (New Jersey politician) (1927–2001), New Jersey General Assembly member John V. McCarthy (c. 1932–1987), member of the Ohio House of Representatives John Thomas McCarthy (born 1939), U.S. ambassador John McCarthy (Australian diplomat) (born 1942), Australian ambassador to Vietnam, Mexico, Thailand, the United States, Indonesia, India and Japan John A. McCarthy (born 1947), Australian ambassador to the Holy See (2012–2016) John Keith McCarthy (1905–1976), Australian public servant in the Territory of Papua and New Guinea John McCarthy (Newfoundland politician), member of the House of Assembly
Humanities and science John McCarthy (computer scientist) (1927–2011), American computer scientist John McCarthy (linguist) (born 1953), American phonologist John D. McCarthy (born 1940), American sociologist John McCarthy (mathematician) (born 1964), mathematician John F. McCarthy Jr., American scientist and engineer
Sports John McCarthy (American football) (1916–1998), American football player John McCarthy (referee) (born 1962), mixed martial arts referee Johnny McCarthy (1934–2020), American basketball player and coach Johnny McCarthy (baseball) (1910–1973), American baseball player John McCarthy (Gaelic footballer) (born 1955), Dublin Gaelic footballer John McCarthy (Kerry Gaelic footballer), who played in the 1964 All-Ireland Senior Football Championship final John McCarthy (ice hockey) (born 1986), American ice hockey player and coach John McCarthy (discus thrower), Paralympic athlete from Ireland John McCarthy (soccer) (born 1992), American soccer player John McCarthy (Australian rules footballer, born 1967), player with Fitzroy and North Melbourne John McCarthy (Australian rules footballer, born 1989) (1989–2012), Port Adelaide and Collingwood player John McCarthy (sprinter) (born 1910), American sprinter, 1934 All-American for the USC Trojans track and field team
Religious states John E. McCarthy (1930–2018), Roman Catholic bishop of the Diocese of Austin John McCarthy (Irish bishop) (1815–1893), bishop of Cloyne John McCarthy (Australian bishop), bishop of Sandhurst in Victoria, Australia John McCarthy (priest) (born 1938), dean of Clogher, 1989–1994 John Joseph McCarthy (1896–1983), Irish-born bishop to Nairobi, Kenya
Musicians John McCarthy (guitarist), guitarist John McCarthy (composer) (born 1961), Canadian composer John McCarthy (conductor) (1916–2009), conductor of choral music
Others John McCarthy (journalist) (born 1956), British hostage and journalist John McCarthy Jr. (1912–1994), Oscar-nominated set decorator John Edward McCarthy (1911–1977), American radio personality John P. McCarthy (1884–1962), American director and screenwriter
See also Jack McCarthy (disambiguation) Jon McCarthy (born 1970), English former professional footballer John McCarty (disambiguation)