Kiefer William Frederick Dempsey George Rufus Sutherland (born 21 December 1966) is a Canadian actor, producer, director, and singer-songwriter. He is best known for his portrayal of Jack Bauer on the Fox drama series 24 (2001–2010, 2014), for which he earned an Emmy Award, a Golden Globe Award, two Screen Actors Guild Awards, and two Satellite Awards.

He has also starred as Martin Bohm in the Fox drama Touch, and provided the facial motion capture and English voices for Big Boss and Venom Snake in the video games Metal Gear Solid V: Ground Zeroes and Metal Gear Solid V: The Phantom Pain. He currently stars as President Tom Kirkman in the ABC political drama series Designated Survivor.

Sutherland got his first leading film role in the Canadian drama The Bay Boy (1984), which earned him a Genie Award nomination. Since that time he has had a successful movie career, starring in films such as Stand by Me (1986), The Lost Boys (1987), Young Guns (1988), Flatliners (1990), A Few Good Men (1992), The Three Musketeers (1993), A Time to Kill (1996), Dark City (1998), Phone Booth (2002), Melancholia (2011), Pompeii (2014) and Flatliners (2017).

Sutherland has been inducted to the Hollywood Walk of Fame and to Canada's Walk of Fame, and has received a Lifetime Achievement Award at the Zurich Film Festival.