Janaki Ballabh Patnaik (; 3 January 1927 – 21 April 2015) was an Indian politician. He was the Governor of Assam from 27 November 2009 to 11 December 2014. He was Chief Minister of Odisha from 9 June 1980 to 7 December 1989 and again from 15 March 1995 to 17 February 1999. He was a leader of the Indian National Congress