Jack G. Hatch (born March 13, 1950) is a former Iowa State Senator and American business owner. He was the Democratic nominee for Governor of Iowa in the 2014 election. A Democrat, Hatch served in the Iowa Senate from 2003 to 2015, and was an assistant majority leader. Prior to his election to the Iowa Senate, Hatch served in the Iowa House of Representatives from 1985 to 1993 and 2001 to 2003. He unsuccessfully ran for mayor in the 2019 Des Moines mayoral election, narrowly being defeated by incumbent mayor Frank Cownie in the runoff.