Roy Owen Haynes (born March 13, 1925) is an American jazz drummer. He is among the most recorded drummers in jazz. In a career lasting over 80 years, he has played swing, bebop, jazz fusion, avant-garde jazz and is considered a pioneer of jazz drumming. “Snap Crackle” was a nickname given to him in the 1950s.

He has led bands such as the Hip Ensemble. His albums Fountain of Youth and Whereas were nominated for a Grammy Award. He was inducted into the Modern Drummer Hall of Fame in 1999. His son Graham Haynes is a cornetist; another son Craig Holiday Haynes and grandson Marcus Gilmore are both drummers.

Haynes was born in the Roxbury section of Boston, Massachusetts, United States to Gustavas and Edna Haynes, immigrants from the Barbados. A younger brother, Michael E. Haynes, became an important leader in the black community of Massachusetts, working with Martin Luther King Jr. during the civil rights movement, representing Roxbury in the Massachusetts House of Representatives, and for forty years serving as pastor of the Twelfth Baptist Church, where King had been a member while he pursued his doctoral degree at Boston University.