Roy Owen Haynes (born March 13, 1925) is an American jazz drummer and group leader. Haynes is among the most recorded drummers in jazz, and in a career lasting over 70 years has played in a wide range of styles ranging from swing and bebop to jazz fusion and avant-garde jazz. He has a highly expressive, personal style (“Snap Crackle” was a nickname given him in the 1950s).

He has also led his own groups, some performing under the name Hip Ensemble. His recordings as a leader, Fountain of Youth and Whereas, were nominated for a Grammy Award. He continues to perform worldwide and was inducted into the Modern Drummer Hall of Fame in 1999. His son Graham Haynes is a cornetist; his son Craig Haynes and grandson Marcus Gilmore are both drummers. Born in the Roxbury section of Boston, Massachusetts, Haynes made his professional debut in 1944 in his native Boston.

Haynes began his full-time professional career in 1945. From 1947 to 1949 he worked with saxophonist Lester Young, and from 1949 to 1952 was a member of saxophonist Charlie Parker‘s quintet. He also recorded at the time with pianist Bud Powell and saxophonists Wardell Gray and Stan Getz. From 1953 to 1958 he toured with singer Sarah Vaughan and also recorded with her.