Loretta Cessor Manggrum (July 28, 1896 – May 11, 1992), sometimes published as L.C. Manggrum, was an American pianist, music educator, and composer of sacred music. In particular, she is known for her cantatas and other choral works. She was the first African American to earn a degree from the Cincinnati Conservatory of Music, where she earned a master's degree in Music in 1953. Some of her archives, including, manuscripts, scores, and correspondence, is in the Library of Congress and in the Amistad Research Center at Tulane University.