In Italy, Denominazione di Origine Controllata (“Controlled designation of origin”), of which there are three:
DO—Denominazione di Origine (designation of origin, seldom used)
DOC—Denominazione di Origine Controllata (controlled designation of origin)
DOCG—Denominazione di Origine Controllata e Garantita (controlled designation of origin guaranteed) - is the category for the highest-ranking wine in Italy.