Chauncey Olcott, born John Chancellor Olcott and often spelled Chauncey Alcott, (July 21, 1858 – March 18, 1932) was an American stage actor, songwriter and singer of Irish descent. When the producer Augustus Pitou approached him in 1893 to succeed William J. Scanlan as the leading tenor in sentimental operettas on Irish themes, Olcott accepted and performed pseudo-Irish roles for the remainder of his career.