William Mesnik (born 1953) is an American character actor, musician and playwright who appeared in numerous films and television series of the 1990s and 2000s. He started his career as a singer-songwriter in the mid-1970s, playing in such Greenwich Village coffee houses as Paul Colby's The Other End. In 2000 he released an album, Campaign Songs, as an accompaniment to his drama Muckrakers: an evening of presidential campaign songs and family dysfunction, which debuted at FCT on the eve of the United States presidential election.