John Rooney may refer to:

• John Rooney (sportscaster) (born 1954), American sports announcer
• John Rooney (footballer) (born 1990), English footballer
• John Rooney (squash player) (born 1979), Irish squash player
• John Rooney (Irish politician), Irish Farmers's Party TD for Dublin County, 1922–1923
• John Rooney (murderer) (1880–1905), convicted American murderer and last person executed by North Dakota
• John E. Rooney (politician) (born 1939), American politician from New Jersey
• John E. Rooney (businessman) (?–2011), U.S. Cellular CEO
• John J. Rooney (politician) (1903–1975), American Democratic Party politician from New York
• John J. Rooney (judge), American judge in Wyoming
• John Rooney (bishop) (1844–1927), Irish-born Roman Catholic bishop in South Africa
• JP Rooney (John Paul), Gaelic footballer