"Cien Años" (English: "One Hundred Years") is a song written by Mexican songwriters Rubén Fuentes and Alberto Cervantes.

It was originally recorded in 1953 by Pedro Infante, who also performed the song in the 1954 film Cuidado con el amor in a famous scene where his character sings it for Elsa Aguirre's character.

[3] In the lyrics of the song, a man describes an encounter with an old love, who passes by him and ignores him as the man laments that she has forgotten him, but in spite of her indifference, he remarks that "if I live a hundred years, a hundred years I'll think of you".

Selena re-recorded the song with a more beat-to-beat pop style in 1990, for their first greatest hits album, 16 Super Éxitos Originales.

Again the song appeared on Selena's greatest hits album, All My Hits/Todos Mis Éxitos Vol.