Matthieu Prosper Avril (born December 12, 1937) is a Haitian political figure who was President of Haiti from 1988 to 1990. A trusted member of François Duvalier's Presidential Guard and adviser to Jean-Claude Duvalier, Lt. Gen. Avril led the September 1988 Haitian coup d'état against a transition military government installed after Jean-Claude Duvalier's 1986 overthrow. He was President until March 1990, in a period which according to Amnesty International was "marred by serious human rights violations". He was arrested in 2001, but released in March 2004 after the 2004 Haitian coup d'état overthrew Jean-Bertrand Aristide.