
Stephen Root (born November 17, 1951) is an American actor. He has starred as Jimmy James on the NBC sitcom NewsRadio (1995–1999), as Milton Waddams in the film Office Space (1999), and voiced Bill Dauterive and Buck Strickland on the animated series King of the Hill (1997–2010, 2025–present).
Root has appeared in numerous Coen brothers films, including O Brother, Where Art Thou? (2000), The Ladykillers (2004), No Country for Old Men (2007), The Ballad of Buster Scruggs (2018), and The Tragedy of Macbeth (2021). Other notable film roles include Dave (1993), Dodgeball (2004), Idiocracy (2006), Cedar Rapids (2011), Selma (2014), Trumbo (2015), Get Out (2017), and On the Basis of Sex (2018).
His television roles have included Capt. K'Vada in the Star Trek: The Next Generation two-part episode "Unification" (1991) and Hawthorne Abendsen in seasons 2–4 of the series The Man in the High Castle. He has supporting roles in a variety of HBO series, including Boardwalk Empire, True Blood, Perry Mason, and Succession. He starred as Monroe Fuches in the HBO dark comedy series Barry, for which he was nominated for a Primetime Emmy Award for Outstanding Supporting Actor in a Comedy Series in 2019.
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The Wrecking Crew
2026 · as Detective Rennert

Finding Nemo
2003 · as Bubbles (voice)

Ice Age
2002 · as Rhino / Start (voice)

No Country for Old Men
2007 · as Man Who Hires Wells

Get Out
2017 · as Jim Hudson

Rango
2011 · as Doc / Merrimack / Mr. Snuggles (voice)

Ice Age: The Meltdown
2006 · as Aardvark Dad (voice)

Mike & Nick & Nick & Alice
2026 · as Chet

Playdate
2025 · as Gordon

Finding Dory
2016 · as Bubbles (voice)

The Lone Ranger
2013 · as Habberman

Heads of State
2025 · as Arthur Hammond

Idiocracy
2006 · as Judge Hector "The Hangman" (uncredited)

Spectral
2016 · as Dr. Mindala

Dog Man
2025 · as Grampa (voice)

Ghost
1990 · as Police Sgt.

Just Friends
2005 · as KC

DodgeBall: A True Underdog Story
2004 · as Gordon