Scott Lang is a fictional character portrayed by Paul Rudd in the Marvel Cinematic Universe (MCU) media franchise, based on the Marvel Comics character of the same name and known commonly by his alias, Ant-Man. He is depicted as a thief-turned-superhero after being granted access to Hank Pym's technology and training, specifically the use of an advanced suit that allows him to change sizes, as well as communicate with ants. He is recruited by Steve Rogers to join the Avengers.

Paul Stephen Rudd is an American actor and comedian. He studied theater at the University of Kansas and the American Academy of Dramatic Arts before making his acting debut in 1991. He received a star on the Hollywood Walk of Fame in July 2015, and was included on the Forbes Celebrity 100 list in 2019. In 2021, he was named People magazine's "Sexiest Man Alive".