Tú o nadie is a Mexican telenovela. It was produced and broadcast by Televisa in 1985, and starred Lucía Méndez, Andrés García and Salvador Pineda. It became a major international hit, and is considered one of the most successful telenovelas from the 1980s.

The story of Tú o nadie took place in Acapulco, and actress Lucía Méndez sang the theme songs for the telenovela which were "Corazón de Piedra" and "Don Corazón".