Thelonious Sphere “T. S.” Monk III (born December 27, 1949) is an American jazz drummer, composer and bandleader. He is the son of jazz pianist Thelonious Monk.

Born in New York City, he began his music career early in his life, honing his skills throughout the 1970s. Monk’s destiny was sealed when Art Blakeygave him his first drum set at the age of 15, and began lessons with Max Roach. After earning a reputation in school as a rabble-rouser (and graduating), the young Monk joined his father’s trio and toured with his dad until the elder Monk’s retirement in 1975. Monk then launched into the music that had captivated him and his generation, R&B. He first toured with a group called Natural Essence and afterward, along with his sister Barbara, formed his own band.