Alex Diaz is a Filipino actor. He began his career in 2012 as a Rookie Radio Jock for Monster Radio RX 93.1 (2012), where he honed his skills in extemporaneous public speaking and improvisation. In 2013, he was selected by Star Magic Talent Management to become a member of the highly publicized Star Magic Circle 2013.

Diaz ventured into theatre, starring as the spunky Newsie Race Higgins in the Philippine production of Disney's "Newsies" (2017), a critically acclaimed, award-winning, and top-grossing Broadway musical where he was able to showcase his skill as a triple threat, rehearsing daily for 6 months in gymnastics, classical voice training, and various genres of dance (ballet, contemporary, hip hop, jazz, and tap).