Reed Birney (born September 11, 1954) is an American actor. Birney is known for his performances on stage and screen often acting on and off Broadway. Birney gained acclaim in 2016 for his role in The Humans winning the Tony Award for Best Featured Actor in a Play. He was also nominated previously in the same category for his performance in Casa Valentina in 2014.

He starred in the films Mass (2021), and The Menu (2022). He is also known for his recurring roles in Gossip Girl (2007–2009), House of Cards (2013–2017), The Blacklist (2014–2015), and Home Before Dark (2021–2022). He has also acted in The Americans, The Handmaid's Tale, and Succession.