Frank Hewitt (October 23, 1935–September 5, 2002) was a hard bop jazz pianist. Born in Queens, New York, Hewitt lived most of his life in Harlem. His mother was a church pianist, and his initial study was classical and gospel music, but switched to jazz after hearing a Charlie Parker record. He took the bop pianists Thelonious Monk, Bud Powell and Elmo Hope as his role models. In the 1950s and 1960s he worked with Howard McGhee, Cecil Payne, John Coltrane, Dinah Washington and Billie Holiday, among others; in 1961 he also participated in the Living Theater's production of Jack Gelber's The Connection. He became a regular figure in the circle of the pianist Barry Harris. In the 1990s he became a central figure at New York's Smalls Jazz Club; aside from playing there several nights a week, he sometimes also ended up using the walk-in refrigerator as a place to bunk when times were rough.
During his lifetime only one track of Hewitt's playing was released, a version of the Kenny Dorham tune "Prince Albert" on the compilation Jazz Underground: Live at Smalls (Impulse, 1998). After his death, however, recordings began to surface on Smalls Records: the trio discs We Loved You, Not Afraid to Live, Fresh from the Cooler, and Out of the Clear Black Sky, and the quintet date Four Hundred Saturdays. His reputation has steadily grown among fans of bebop piano.