Christopher Jacob Abbott (born February 10, 1986) is an American actor. He is known for his work in television, independent films, and theatre. In 2011, he made his feature film debut in Martha Marcy May Marlene and his Broadway debut in the revival of the play The House of Blue Leaves. He then gained recognition for his role as Charlie in the HBO series Girls. In 2026, he returned to Broadway, portraying Biff Loman in the revival of Death of a Salesman, for which he received a nomination for the Tony Award for Best Featured Actor in a Play.

Abbott received a nomination for the Independent Spirit Award for Best Male Lead for the drama film James White (2015) and a Golden Globe Award nomination for his portrayal of Capt. Yossarian in the Hulu miniseries Catch-22 (2019). He had supporting roles in the films A Most Violent Year (2014), It Comes at Night (2017), First Man (2018), Possessor (2020), Black Bear (2020), and Poor Things (2023). He played the titular character in the film Wolf Man (2025). Abbott also starred in The Sinner (2017) on USA Network and the Apple TV+ series The Crowded Room (2023).