John Mullen

John Mullen may refer to:

• John Mullen (catcher) (1856–1909), baseball player
• John Mullen (baseball executive) (1924–1991), baseball executive
• John Mullen (executive) (born 1955), Australian corporate executive
• John J. Mullen (American football), American football coach
• John J. Mullen (mayor) (1876–1952), American politician
• John Joseph Mullen (1829–1897), member of the Queensland Legislative Council
• John Kernan Mullen (1847–1929), Irish-American businessman, philanthropist
• John A. Mullen (?–1929), American judge