Damion Poitier (/ˈpwɑːtieɪ/ PWAH-tee-ay; born June 4, 1976) is an American actor and stuntman, best known for his role as Chains in Payday 2. He made an uncredited appearance as Thanos in The Avengers (2012), the character's first appearance in the Marvel Cinematic Universe (in future appearances, Josh Brolin would take over the role). He has also had roles in Captain America: Civil War, Star Trek, Jarhead, and Never Die Alone.

Poitier was born in Philadelphia, and moved to Massachusetts in his early childhood. He became interested in acting after watching a man who looked "just like [his] grandfather" appear on television talk about acting. He acted through school, but got his first "professional" job as a scare actor at Spooky World. Poitier's first real acting job was a stunt performer on Sheena.

Poitier practices Universalism. He is unsure if he is related to Sidney Poitier, but knows that their ancestors "hail from the same island".