Giustino (Giustin in local dialect) is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about northwest of Trento. As of 31 December 2004, it had a population of 748 and an area of .
Giustino borders the following municipalities: Vermiglio, Pinzolo, Spiazzo, Strembo, Carisolo, Caderzone, Massimeno, Stenico and Comano Terme.