Rosendo Matienzo Cintrón (April 22, 1855 – December 13, 1913) was a Puerto Rican lawyer and politician, a member of the Puerto Rican House of Representatives, and a lifelong political contrarian. He favored Puerto Rican autonomy when Puerto Rico was a Spanish colony. After the Spanish–American War, when the island was ceded to the United States, he advocated statehood for Puerto Rico. In later years, Matienzo Cintrón supported Puerto Rico's independence.