Gavin Williamson (Winnipeg, 1897 - Chicago, 1989) was an American pianist, harpsichordist, organist and music educator.

With pianist Philip Manuel, he formed a duo in 1922 that helped promote the professional use of harpsichords in the United States.

At the University of Chicago, Williamson met Philip Manuel (1893–1959) and the two developed an interest in harpsichord as a concert instrument.

[2] With these instruments, they initiated concert tours of the United States, and also worked as teachers of harpsichord, piano and voice.

He died in Chicago at age 92. Notable students include Alexander Frey, Rosalyn Tureck.,[4] and Dina Koston.