William Butler Jr. (December 15, 1924 – March 20, 1991) was an American soul jazz guitarist.

In the 1950s he was a member of a trio led by Doc Bagby and accompanied keyboardist Bill Doggett.

[2][3] Butler also worked with Al Casey, King Curtis, Eddie "Lockjaw" Davis, Bill Davison, Tommy Flanagan, Panama Francis, Dizzy Gillespie, Benny Goodman, Johnny Hodges, Floyd "Candy" Johnson, David "Fathead" Newman, Houston Person, Sammy Price, Jimmy Smith, Norris Turney, and Dinah Washington.

[5] Butler died of a heart attack at home in Teaneck, New Jersey, in 1991.

[1] With Gene Ammons With King Curtis With Bill Doggett With Dizzy Gillespie With John P. Hammond With Johnny Hodges With Illinois Jacquet With Ben E. King With Freddie King With Memphis Slim With David "Fathead" Newman With Houston Person With Jimmy Smith With Sonny Stitt With Grady Tate With others