Robert Cummin Katter was an Australian politician who served in the House of Representatives from 1966 to 1990, representing the National Party. He served as Minister for the Army in the McMahon government in 1972. His sons Bob Katter Jr. and Carl Katter as well as grandson Robbie have also been involved in politics.

Robert Bellarmine Carl Katter is an Australian politician who has been a member of the House of Representatives since 1993. He was previously active in Queensland state politics from 1974 to 1992. Katter was a member of the National Party until 2001, when he left to sit as an independent. He formed his own party, Katter's Australian Party, in 2011.