Vincent Anthony Vaughn (born March 28, 1970) is an American actor, producer, screenwriter, and comedian.

Vaughn began acting in the late 1980s, appearing in minor television roles before attaining wider recognition with the 1996 comedy-drama film Swingers. He has appeared in a number of films in the 1990s, including the sports film Rudy (1993), the sci-fi adventure dinosaur film The Lost World: Jurassic Park (1997), and the drama-thriller Return to Paradise (1998).

Other than his dramatic role in The Cell (2000), in the 2000s he acted in several comedies, including Old School (2003), Dodgeball: A True Underdog Story (2004), Wedding Crashers (2005), The Break-Up (2006), Fred Claus (2007), and Four Christmases (2008). He continued his comedic roles in the 2010s with The Dilemma (2011), The Watch (2012), and The Internship (2013). In 2015, he starred as Frank Semyon in the second season of the HBO anthology crime drama television series True Detective alongside Colin Farrell, Taylor Kitsch and Rachel McAdams.