Juan Karlos Labajo (Tagalog: [hwan ˈkaɾlos lɐˈbaho]; born February 5, 2001) is a Filipino singer, musician, and actor. Labajo rose to fame at age 13 when he finished third in the first season (2014) of The Voice Kids. He is the frontman and primary songwriter of his namesake band Juan Karlos. He has since released two studio albums as a solo artist and two studio albums with his band.

As an actor, he had supporting roles in the ABS-CBN television series Hawak-Kamay (2014), Pangako Sa 'Yo (2015–16), A Love to Last (2017), and Senior High (2023–24). He was also a celebrity housemate in the reality show Pinoy Big Brother: Lucky 7 (2016). In film, Labajo was nominated for the Gawad Urian Award for Best Supporting Actor for his role in Blue Room (2022). He also portrayed Senator Ninoy Aquino in the musical biopic Ako si Ninoy (2023).