Marguerite Dunlap (July 20, 1887 – January 7, 1959) was an American contralto opera singer.

[4] She had a daughter, Margaret G. Derr, and a son, Joseph E. Garabrant Jr. She moved to Montclair in 1920, and retired in the 1920s.

[4] Dunlap began to show singing talent early in life, becoming an expert pianist by the age of 16.

[6] When she was 18 she went to New York City and in a competitive audition won a scholarship to the Metropolitan Opera school.

[10] Dunlap had her debut at the Metropolitan Opera on January 18, 1907, in the first production of Manon Lescaut, composed by Puccini, with Enrico Caruso as the lead singer;[11] her last portrayal of this role was on March 2, 1907.