John Cox may refer to:

Arts and entertainment

• John Howard (American actor) (1913–1995), American actor, birth name John R. Cox, Jr.
• John Cox (director) (born 1935), English theatre director
• John Cox (sound engineer) (1908–1972), English sound engineer
• John Cox (special effects artist) (born 1959), Australian special effects artist
• Jack E. Cox (1896–1960), or John J. Cox, an English cinematographer
• John Rogers Cox (1915–1990), American painter

Military

• Sir John Cox (Royal Navy officer, died 1672), English naval officer killed at the Battle of Solebay
• Sir John William Cox (1821–1901), British Army general serving in Afghanistan and in the Crimea War, see List of British generals and brigadiers
• Sir John Cox (Royal Navy officer, born 1928) (1928–2006), British Royal Navy admiral
• John V. Cox (born 1930), United States Marine Corps naval aviator

Politics

• John Cox (Virginia politician) (born 1944), American politician, member of the Virginia House of Delegates
• John F. Cox (born 1955), American attorney, politician, and city manager
• John H. Cox (born 1955), American businessman, radio host, and Republican gubernatorial candidate in California
• John I. Cox (1855–1946), American politician, governor of Tennessee
• John W. Cox Jr. (born 1947), American politician, Illinois lawyer, and former Congressman, Democrat
• John W. Cox (Minnesota politician) (1888–1958), American politician and businessman
• John R. Cox, American politician, candidate in the United States House of Representatives election in Alaska, 2010

Sports

• Johnny Cox (born 1936), American basketball player
• Chubby Cox (born 1955), American basketball player, full name John Arthur Cox III
• John Cox (basketball, born 1981), Venezuelan-American basketball player
• John Cox (cricketer) (1823–1866), Australian cricketer
• John Cox (footballer) (1870–19??), England international footballer
• Jack Cox (footballer) (1877–1955), British footballer and manager
• John Cox (wrestler), British wrestler

Other

• John B. Cox, British-Australian ornithologist
• John Carrington Cox (born 1943), American professor and economist
• John Charles Cox (1843–1919), English cleric and local historian
• John Coates Cox, died 1816, doctor who tried to free Abdul Rahman Ibrahima Sori from slavery
• John Cox (chess player) (born 1962), English chess player and chess author
• John Cox (psychiatrist), British psychiatrist and President of the Royal College of Psychiatrists
• John Cox (priest) (born 1940), Archdeacon of Sudbury
• John Edmund Cox, English cleric and antiquarian
• John Henry Cox (1750–1791), English explorer
• John Mark Cox Jr., first African American to attend Rollins College, Florida
• John Watson Cox (1902–1984), New Zealand lawyer and town planning administrator