José Guardiola Díaz de Rada, was a Spanish singer of popular music who sang in Spanish and Catalan.
Guardiola was born in Barcelona. He performed and recorded mostly Spanish versions of foreign songs and reached his maximum fame in Spain and Latin America in the early 1960s with versions of songs like "Sixteen Tons", "Mack the Knife" and "Ya Mustafa". He was known as the Spanish Crooner due to his style and the types of songs he sang. He represented Spain in the Eurovision Song Contest 1963, placing 12th. At that time he also sang a few songs with his infant daughter. He retired in 2008.