Louis D'Angelo (May 6, 1888 – August 9, 1958) was an American bass-baritone of Italian birth who was particularly known for his performances at the Metropolitan Opera during the first half of the 20th century.

He created roles in the world premieres of seven operas at the Met, including Marco in Puccini's Gianni Schicchi in 1917.

[3] Other roles he sang at the Century Opera House included Silvio in Pagliacci, Baron Douphol in La traviata, Kagama in Natoma, and Yamadori in Madama Butterfly.

[1] He made his debut with the Met at the Brooklyn Academy of Music as Sciarrone in Tosca with Geraldine Farrar in the title role on November 13, 1917.

[1] A 1927 recording of his "Excerpt from Act IV of La Juive," accompanying tenor Giovanni Martinelli, is credited in the 2013 film The Immigrant.