Gregory Buck Kinnear (born June 17, 1963) is an American actor. He was nominated for an Academy Award for Best Supporting Actor for his role in As Good as It Gets (1997).

Kinnear has appeared in many popular films, including Sabrina (1995), You've Got Mail (1998), Nurse Betty (2000), Someone like You (2001), We Were Soldiers, Auto Focus (both 2002), Stuck on You (2003), Robots (2005), Little Miss Sunshine, Invincible (both 2006), Green Zone, The Last Song (both 2010), Heaven Is for Real (2014), Misbehaviour (2020) and television roles, such as Friends, Talk Soup, Modern Family, House of Cards, Rake, and the miniseries The Stand (2020). Kinnear portrayed John F. Kennedy in The Kennedys (2011), and Joe Biden in Confirmation (2016).

Early life
Kinnear was born on June 17, 1963, in Logansport, Indiana, to Suzanne (née Buck), a homemaker, and Edward Kinnear, a career diplomat who worked for the US State Department. He has two older brothers, James (born 1957) and Steven (born 1959). He is of Scottish-Irish descent. Kinnear grew up a "Foreign Service brat", having moved around frequently, from Beirut to Athens. While a student at the American Community Schools in Athens, Kinnear first ventured into the role of talk show host with his radio show School Daze With Greg Kinnear. Returning to the United States for a university education, he attended the University of Arizona, graduating in 1985 with a degree in broadcast journalism. While there, he was a member of the Alpha Tau Omega fraternity.