John Cornwell

John Cornwell may refer to:

• Jack Cornwell (1900–1916), British sailor posthumously awarded the Victoria Cross for gallantry at the Battle of Jutland
• John J. Cornwell (1867–1953), American politician, Governor of West Virginia
• John Cornwell (writer) (born 1940), British journalist, author, and academic
• John Cornwell (footballer) (born 1964), English footballer
• John Cornwell (artist) (1930–2020), Australian artist