John McMullen

John McMullen may refer to:

• John McMullen (bishop) (1832–1883), first bishop of Davenport, Iowa
• John McMullen (broadcaster), American radio and internet broadcaster
• John McMullen (engineer) (1918–2005), engineer and owner of two sports teams
• John McMullen (politician) (1843–1922), Wisconsin state senator
• John K. McMullen, USAF officer
• John A. McMullen (born 1941), Vermont businessman and political candidate