Lia Ryan McHugh (born November 2005)^[1][2] is an American actress. She has roles in Totem (2017), The Lodge, and Into the Dark (both 2019). She portrayed Sprite in the Marvel Cinematic Universe (MCU) film Eternals (2021).

McHugh was born in November 2005^[1][2] in Pittsburgh, Pennsylvania, into an acting family. She has three older siblings—Flynn, Logan and Shea—and a younger sibling, Gavin, who has cerebral palsy.^[3] Gavin is also an actor and plays Christopher Diaz in the drama series 9-1-1.^[4]

McHugh has spent the majority of her career appearing in horror projects; A Haunting, Totem, Along Came the Devil, The Lodge, Into the Dark, and A House on the Bayou.^[5] She portrayed Sprite in the Marvel Cinematic Universe film Eternals, which was released in November 2021.^[6]