Justin de Dios (born July 7, 1998), known mononymously as justin, is a Filipino performer, songwriter, visual artist and creative director. He is one of the vocalists of the Filipino boy band SB19, which debuted in 2018. The group's initial struggles gave way to sudden success after they went viral in 2019, and their discography includes the album Get in the Zone (2020) and two extended plays (EPs). As SB19's creative director, Justin has directed several of their music videos and spearheaded their 2021 online concert Back in the Zone.