Rubén Fuentes (born 15 February 1926) is a Mexican classical violinist and composer, who is best known for his contributions to mariachi music.In 1944, he joined Mariachi Vargas de Tecalitlán as a violinist and later as a music arranger. In 1955 Fuentes stopped performing in the group, but he has maintained his position as producer, musical arranger and musical director to the present day. As such, he had a profound influence on Mariachi Vargas de Tecalitlán and mariachi music in general. He is best known for his work on Linda Ronstadt's classic, Grammy award-winning, multi-platinum Canciones de Mi Padre album. With domestic sales of two-and-a-half million copies, Canciones de Mi Padre stands as the biggest-selling non-English language record in US history.