Steven James Zahn ( ZAHN; born November 13, 1967) is an American actor. His film roles include Reality Bites (1994), Out of Sight (1998), Stuart Little (1999), Daddy Day Care (2003), Shattered Glass (2003), Sahara (2005), Chicken Little (2005), the Diary of a Wimpy Kid trilogy (2010–2012), Dallas Buyers Club (2013), The Good Dinosaur (2015), and War for the Planet of the Apes (2017). On television, Zahn appeared as Davis McAlary on HBO's Treme (2010–2013), and as Mark Mossbacher in the first season of the HBO satire comedy miniseries The White Lotus (2021), for which he was nominated for the Primetime Emmy Award for Outstanding Supporting Actor in a Limited or Anthology Series or Movie. Zahn won the Independent Spirit Award for Best Supporting Male for his performance in the film Happy, Texas (1999).
