Xavier Martínez (February 7, 1869 – January 13, 1943) was a California artist active in the late 19th and early 20th century.
He was a well-known bohemian figure in San Francisco, the East Bay, and the Monterey Peninsula and one of the co-founders of two California artists' organizations and an art gallery.
He painted in a tonalist style and also produced monotypes, etchings, and silverpoint.