Joaquim Rafael Branco (born 1953) is a São Toméan politician. He is the President of the Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party (MLSTP/PSD), and the former Prime Minister of the country.
Branco served as Minister of Foreign Affairs from 2000 to 2001. He was Minister of Public Works in July 2003, when he was detained by the military during a briefly successful coup d'etat led by Major Fernando Pereira.
After Prime Minister Patrice Trovoada was defeated in a May 2008 vote of no confidence proposed by the MLSTP/PSD, which was then in opposition, President Fradique de Menezes asked the MLSTP/PSD to form a government in June 2008, and it chose Branco to become the next Prime Minister. Trovoada's Independent Democratic Action (ADI) party denounced Menezes' designation of the MLSTP/PSD to form a government as unconstitutional.