Héctor Martínez Muñoz (December 14, 1924 – November 14, 1991) was the first member of the Supreme Court of Puerto Rico appointed by Governor Luis A. Ferré and confirmed by an opposition-controlled Senate of Puerto Rico presided by Rafael Hernández Colón. In the late 1970s, Governor Carlos Romero Barceló appointed him to several ad honorem posts, including the Governor's Judicial Nominations Advisory Committee and the Puerto Rico Council on Higher Education. Justice Héctor Martínez Muñoz died in San Juan at the age of 66.