John McNally may refer to:

• John McNally (musician) (born 1941), singer and guitarist with the Searchers
• John J. McNally (c. 1854-1931), American playwright and theatre critic
• John McNally (Emmerdale), a fictional character on the British soap opera Emmerdale

• John McNally (politician) (born 1951), Scottish National Party politician, MP for Falkirk since 2015
• John McNally IV (born 1969), mayor of Youngstown, Ohio

• John McNally (boxer) (1932–2022), Irish Olympic boxer
• John McNally (sport shooter) (born 1956), American Olympic sport shooter
• John McNally (tennis) (born 1998), American tennis player

• Johnny "Blood" McNally (John Victor McNally, 1903–1985), American football player and coach