Crispus Walter Kiyonga (born 19 September 1952) is a Ugandan medical doctor, politician and career diplomat.

His studies at Johns Hopkins were funded through a Fogarty International Center Scholarship Archived 2007-09-12 at the Wayback Machine.

He joined the National Resistance Movement (NRM) during its struggle against the second Milton Obote regime from 1981 until 1986.

[8] From 1986, when the NRM assumed power in Uganda, until 2006 when he was appointed as Minister of Defense, Crispus Kiyonga held several cabinet and non-cabinet posts in the Ugandan Government:[8] Between 1992 and 1994, Kiyonga left the government temporarily to serve as a consultant with the World Bank and the African Development Bank.

He returned to active politics in 1994 when he was elected to the Constituent Assembly that drew up the 1995 Uganda Constitution.