Kodi Smit-McPhee (born 13 June 1996) is an Australian actor. He gained recognition as a child actor for his leading roles in The Road (2009) and Let Me In (2010). In 2021, Smit-McPhee garnered critical acclaim for his performance as Peter Gordon in Jane Campion's western film The Power of the Dog, for which he earned nominations for an Academy Award, a BAFTA Award, and a Screen Actors Guild Award, and won the Golden Globe Award for Best Supporting Actor.

He provided the voice of the titular character in ParaNorman (2012) and appeared in Dawn of the Planet of the Apes (2014), X-Men: Apocalypse (2016), Alpha (2018), and Dark Phoenix (2019).