John McKenna (1855–1936) was an Irish businessman, rugby player, and first manager of Liverpool F.C.
John McKenna or MacKenna may also refer to:
Entertainment John McKenna (flautist) (1880–1947), Irish-American flautist John MacKenna (born 1952), Irish playwright and novelist John McKenna (sculptor) (born 1964), British/Scottish sculptor
Sports John McKenna (footballer) (1882–?), English footballer who played as a defender John McKenna (American football) (1914–2007), American football player, coach, and administrator John McKenna (hurler) (1938–2025), Irish hurler Johnny McKenna (1926–1980), Irish footballer Jack McKenna (born 1942), Irish darts player
Other John McKenna (usher) (1841–1898), Irish American civil servant; Chief Usher of the White House John or Juan Mackenna (1771–1814), Irishman hero of the Chilean War of Independence