Juan Albert Viloca Puig (Catalan: Joan Albert Viloca Puig, pronounced [ʒuˈan əlˈβɛɾ βiˈlɔkə ˈputʃ]; born 17 January 1973) is a professional tennis player from Spain. He turned professional in 1992. His favourite surface is clay, surface on which he achieved his both ATP finals in his whole career, although both came in 1997. Viloca was suspended for two months in 2005 after testing positive for hydroxyprednisolone.