Marie Mattfeld (1870 — September 18, 1927) was a German opera singer who performed repertoire from the mezzo-soprano and soprano canon of performance literature during the last decade of the 19th century and the first three decades of the 20th century. Beginning her career performing in concerts and operas in Munich in the early 1890s, she joined Walter Damrosch's newly created American opera company in 1896. After performing for several years in operas in the United States, she returned to Germany where she was committed to Theater Bremen from 1901 to 1905. In 1906 she returned to the United States to join the roster of resident artists at the Metropolitan Opera ("The Met"); having previously made her debut with that company in 1901. She remained committed to the Met up until her death in 1927; giving a total of 900 performances in more than forty different operas. She was particularly admired for her portrayal of Hänsel in Engelbert Humperdinck's Hansel and Gretel.

Mattfeld is best remembered for creating roles in the world premieres of several operas at the Met; including Humperdinck's Königskinder (1910), Giacomo Puccini's La fanciulla del West (1910), Damrosch's Cyrano (1913), and Puccini's Suor Angelica (1918). Her voice is preserved on two recordings made with the Victor Talking Machine Company.