John McDonough may refer to: * John McDonough (businessman) (born 1951), British businessman, CEO of Carillion * John McDonough (Savannah mayor) (1849–?), mayor of Savannah, Georgia, 1891–1895 * John McDonough (sports executive) (born 1953), president of the Chicago Blackhawks * John McDonough (piper) (died 1850s), Irish piper * John E. McDonough (born 1953), member of the Massachusetts House of Representatives, 1985–1997 * John J. McDonough (mayor), mayor of St. Paul, Minnesota, 1940–1948 * John J. McDonough (Boston), member of the Boston School Committee * John P. McDonough (born 1950), American politician from Maryland * John P. McDonough (chaplain) (born 1928), Chief of Chaplains of the U.S. Air Force * John T. McDonough (1843–?), Secretary of State of New York 1899–1902, and