Theo Russell Cooper (born 4 February 1941) is a former Australian National Party politician.
He was Premier of Queensland for a period of 73 days, from 25 September 1989 to 7 December 1989.
His loss at the state election of 1989 ended 32 years of continuous National Party rule over Queensland.
He has 4 children, 12 grandchildren and 1 great-grandchild.