Iemma is a surname. Notable people with the surname include:
Clara Iemma (born 1998), Australian cricketer Julio Iemma (born 1948), Venezuelan sports shooter Julio César Iemma (born 1954), Argentine sports shooter Morris Iemma (born 1961), 40th Premier of New South Wales from 3 August 2005 to 5 September 2008 First Iemma ministry, 89th ministry of the Government of New South Wales Second Iemma ministry, 90th ministry of the Government of New South Wales