Tatiana Troyanos (1938–1993) was an American mezzo-soprano from New York City who began her professional operatic career in the 1960s, appearing with major opera houses and on concert stages. Her repertoire ranged from Baroque and Classical works through the Romantic and contemporary eras, with a focus on German and Italian roles, and she maintained an active presence in opera, concert and recital performance that contributed to late 20th-century American opera.
