María Elvira Gallegos Ríos (16 November 1913 – 13 January 1987) was a Mexican singer and actress. 　　One of the most notable performers of Agustín Lara's songs, Ríos was the first Mexican singer who achieved international success through radio, records, nightclub engagements, tours, and films. She was well known in Mexico, United States, Brazil, Argentina, and France, among other countries. Some of her greatest hits are "Noche de ronda", "Flores negras", "Perfidia", "Desesperadamente", and "Ausencia".