David Dastmalchian (/dəstˈmɑːltʃən/ dəst-MAHL-chən; born July 21, 1975) is an American actor, writer, and producer. He has had supporting roles in a number of superhero franchises: he portrayed Thomas Schiff in The Dark Knight (2008), Kurt and Veb in the Ant-Man franchise, Abra Kadabra in the CW's The Flash, and Polka-Dot Man in The Suicide Squad (2021).

Dastmalchian has appeared in three films directed by Denis Villeneuve: Prisoners (2013), Blade Runner 2049 (2017), and Dune (2021). Although he is best known for his work as a character actor, Dastmalchian had leading roles in the 2014 semi-autobiographical film Animals, which he wrote, and the 2023 horror film Late Night with the Devil, which he produced. He is also set to portray Mr. 3 in the Netflix series One Piece. He has a guest appearance on the 2025 TV Series Dexter: Resurrection.