Alexander Balos Williams (October 24, 1906 – March 25, 1991) was an American jazz trombonist, perhaps best known for playing with the premier big bands of his day, especially the Chick Webb orchestra.

[1] The family of thirteen moved to Washington, D.C., when Williams was very young however, the siblings lost their parents six months apart and were sent to an St. Joseph's Industrial School, an orphanage in Delaware.

He began taking private lessons while attending Armstrong High School and occasionally played with his professor's sons.

[3] His admiration of Fletcher Henderson strongly influenced Williams jazz musicianship which received notice locally.

[10] His associations in music included Sidney Bechet, Duke Ellington, Art Hodes and Roy Eldridge whom he toured Europe with in 1947.