Robert Henry Timmons (December 19, 1935 – March 1, 1974) was an American jazz pianist and composer. He was a sideman in Art Blakey‘s Jazz Messengers for two periods (July 1958 to September 1959; February 1960 to June 1961), between which he was part of Cannonball Adderley‘s band. Several of Timmons’ compositions written when part of these bands – including “Moanin’“, “Dat Dere“, and “This Here” – enjoyed commercial success and brought him more attention. In the early and mid-1960s he led a series of piano trios that toured and recorded extensively.

Timmons was strongly associated with the soul jazz style that he helped initiate. This link to apparently simple writing and playing, coupled with drug and alcohol addiction, led to a decline in his career. Timmons died, aged 38, from cirrhosis. Several critics have commented that his contribution to jazz remains undervalued.

Timmons was born in Philadelphia, Pennsylvania, the son of a minister. He had a sister, Eleanor. Both of his parents, and several aunts and uncles, played the piano. From an early age Timmons studied music with an uncle, Robert Habershaw, who also taught McCoy Tyner. Timmons first played at the church where his grandfather was minister; this influenced his later jazz playing. He grew up in the same area as other future musicians, including the Heath brothers, Jimmy, Percy, and Tootie. Timmons’ first professional performances were in his local area, often as a trio that included Tootie Heath on drums. After graduating from high school Timmons was awarded a scholarship to study at the Philadelphia Musical Academy.

Timmons moved to New York in 1954. He played with Kenny Dorham in 1956, making his recording debut with the trumpeter in a live set in May of that year. He went on to play and record with Chet Baker in 1956–57 (bassist Scott LaFaro was part of this band for a time), Sonny Stitt in 1957, and Maynard Ferguson in 1957–58. He also recorded as a sideman with hornmen Curtis Fuller, Hank Mobley, and Lee Morgan, all for Blue Note Records in 1957.