Kevin Delaney Kline (born October 24, 1947) is an American actor. In a career spanning over five decades, he has become a prominent leading man across both stage and screen. His accolades include an Academy Award and three Tony Awards, along with nominations for two British Academy Film Awards, two Primetime Emmy Awards, and five Golden Globe Awards. In 2003, he was inducted into the American Theatre Hall of Fame.

Kline began his acting career on stage in 1972 with The Acting Company and gained prominence for his numerous performances with The Public Theatre and in New York Shakespeare Festival. He has gone on to win three Tony Awards for his work on Broadway, including wins in Best Featured Actor in a Musical in On the Twentieth Century (1978), Best Actor in a Musical for The Pirates of Penzance (1981), and Tony Award for Best Actor in a Play for the revival of Noël Coward's Present Laughter (2017). He was Tony-nominated for playing John Falstaff in Henry IV (2004).

Kline made his film debut in Sophie's Choice (1982) before winning the Academy Award for Best Supporting Actor for his comedic role in A Fish Called Wanda (1988). He also acted in The Pirates of Penzance (1983), Silverado (1985), Cry Freedom (1987), The January Man (1989), Soapdish (1991), Grand Canyon (1991), Chaplin (1992), Dave (1993), The Ice Storm (1997), In & Out (1997), The Emperor's Club (2002), A Prairie Home Companion (2006), and Beauty and the Beast (2017). He also voiced roles in The Hunchback of Notre Dame (1996) and The Road to El Dorado (2000).

On television, Kline started his career in the soap opera Search for Tomorrow (1976). He received nomination for the Primetime Emmy Award for Outstanding Lead Actor in a Limited or Movie for playing the title role in the PBS production of Cyrano de Bergerac (2008). He starred in the Apple TV+ miniseries Disclaimer (2024). Since 2011, he has voiced Calvin Fischoeder in the animated sitcom Bob's Burgers.