Rosa Collazo a.k.a. Rosa Cortez-Collazo (1904 – May 1988) was a political activist and treasurer of the New York City branch of the Puerto Rican Nationalist Party. She was the wife of Oscar Collazo one of two Nationalists who attacked Blair House in 1950 in an attempt to kill President Harry Truman. She was accused by the FBI of assisting Nationalists Lolita Lebrón, Rafael Cancel Miranda, Irvin Flores and Andres Figueroa Cordero in their assault on the United States House of Representatives in 1954. She was charged on both occasions with complicity in a conspiracy to overthrow the United States Government and imprisoned because of her political beliefs.