Bruce Barthol (November 11, 1947 – February 20, 2023) was an American musician, singer and songwriter. Born at Alta Bates Hospital, Berkeley, California, he was the original bass player for the psychedelic rock band Country Joe and the Fish, from its inception through November 1968. According to the Bethel Woods Center for the Arts, Barthol's departure from Country Joe and the Fish stemmed from a dispute with other band members over a potential performance at the 1968 Democratic National Convention protests, as well as to avoid being drafted into military service.