Paul Stephen Rudd (born April 6, 1969) is an American actor, comedian, screenwriter and producer. He studied theater at the University of Kansas and the American Academy of Dramatic Arts before making his acting debut in 1991.

Rudd's films include Clueless (1995), Halloween: The Curse of Michael Myers (1995), Romeo + Juliet (1996), The Object of My Affection (1998), Wet Hot American Summer (2001), Anchorman: The Legend of Ron Burgundy (2004), The 40-Year-Old Virgin (2005), Knocked Up (2007), This Is 40 (2012), Wanderlust (2012), Mute (2018), The Fundamentals of Caring (2016), Ideal Home (2018), and Ghostbusters: Afterlife (2021). He also has played Ant-Man in the Marvel Cinematic Universe, appearing in Ant-Man (2015), Captain America: Civil War (2016), Ant-Man and the Wasp (2018), Avengers: Endgame (2019), the animated series What If…? (2021) and Ant-Man and the Wasp: Quantumania (2023).

In addition to his film career, Rudd has appeared in numerous television shows, including the NBC sitcom Friends as Mike Hannigan, along with guest roles on Tim and Eric Awesome Show, Great Job!, Reno 911! and Parks and Recreation, and has also hosted Saturday Night Live multiple times. He starred in a dual role in the Netflix comedy series Living with Yourself, which earned him a Golden Globe Award nomination for Best Actor – Television Series Musical or Comedy. He stars in the miniseries The Shrink Next Door (2021).

He received a star on the Hollywood Walk of Fame in July 2015. He was named as part of the Forbes Celebrity 100 in 2019. In 2021, Rudd was named People magazine's "Sexiest Man Alive".