An Seo-hyun (안서현, born January 12, 2004) is a South Korean actress. Beginning her acting career as a child performer, she gained early recognition in television series including Dream High (2011) and The Village: Achiara's Secret (2015), as well as feature films like The Housemaid (2010) and The Divine Move (2014).

She achieved major international visibility for her lead role as Mija in Bong Joon-ho's Netflix feature Okja (2017), which competed for the Palme d'Or at the Cannes Film Festival. Her filmography includes Oh! My Ghost (2022) and Hana Korea (하나 코리아).