Benjamin Alexander Riley Jr. (July 17, 1933 – November 18, 2017) was an American jazz drummer known for his work with Thelonious Monk, as well as Alice Coltrane, Stan Getz, Eddie "Lockjaw" Davis, Ahmad Jamal, and as a member of the group Sphere.

Benjamin Alexander Riley Jr. was born in Savannah, Georgia, on July 17, 1933, and at the age of four moved with his family to New York City.

[1] Riley performed with Randy Weston, Sonny Stitt, Stan Getz, Junior Mance, Kenny Burrell, Eddie "Lockjaw" Davis–Johnny Griffin (1960–1962), Ahmad Jamal, Billy Taylor, and Ray Bryant.

[2] After Monk, he played with Alice Coltrane (intermittently between 1968 and 1975), Ron Carter (1975–1977), Jim Hall (1981), and the bands the New York Jazz Quartet (1970s and 1980s) and Sphere.

[2] Riley died of lung disease and complications of diabetes in West Islip, New York on November 18, 2017, aged 84[3][4] With Noah Baerman With Chet Baker With Bill Barron With Kenny Barron With Gary Bartz With Ted Brown With Ray Bryant With Kenny Burrell With Ron Carter With Alice Coltrane With Eddie "Lockjaw" Davis With Ricky Ford With Red Garland With Benny Golson With Bennie Green With Johnny Griffin With Michael Franks With Andrew Hill With Hank Jones With Sam Jones With Junior Mance With Ken McIntyre With Jay McShann With Thelonious Monk With Mark Murphy With Freddie Redd With Sonny Rollins With Dan Rose With Charlie Rouse With Jack Sheldon With Sphere With Jeremy Steig With Horace Tapscott With Roseanna Vitro With Larry Willis