William Frederick Gibbons (born December 16, 1949) is an American musician, singer, songwriter, record producer, and actor, best known as the guitarist and primary lead vocalist of American rock band ZZ Top. He began his career in the Moving Sidewalks, who recorded Flash (1968) and opened four dates for the Jimi Hendrix Experience. Gibbons formed ZZ Top in late 1969 and released ZZ Top's First Album in early 1971. He is also known as The Reverend Billy F. Gibbons.

Gibbons has made appearances with other artists and acted on television shows, most notably Bones. He was ranked at number 32 on the 2011 Rolling Stone list of the 100 Greatest Guitarists of All Time.