Lúcio Rodrigo Leite Barreto de Lara (9 April 1929 - 27 February 2016), also known by the pseudonym Tchiweka, was an Angolan revolutionary, physicist-mathematician, politician, anti-colonial ideologist and one of the founding members (and president) of the Popular Movement for the Liberation of Angola (MPLA). He served as General Secretary of the MPLA during the Angolan War of Independence and Angolan Civil War.