Warren Kizza Besigye Kifefe (born 22 April 1956), known as Kizza Besigye, and also nicknamed Colonel (in reference to his military rank before he left the Army), Daktari, Kifefe, KB, and Ssenyondo ("Big Hammer"), is a Ugandan physician, politician, and former military officer in the Uganda People's Defence Force.
He served as the president of the Forum for Democratic Change (FDC) political party and was an unsuccessful candidate in Uganda's 2001, 2006, 2011, and 2016 presidential elections, losing all of them to the incumbent Yoweri Museveni, who has been President of Uganda since 26 January 1986.
The results of the 2006 elections were contested in court, where the court found massive rigging and disenfranchisement.
He allowed an early internal FDC election for a successor president, which took place on 24 November 2012.
He decided that the successor president should be in place earlier than planned to allow the new president enough time to prepare the party for the next cycle of general elections.