Alison Wright (born July 12, 1976, in Sunderland, Tyne and Wear, England) is an English actress raised by her adoptive parents, who began performing in children's musical theatre at age seven. She made her film debut as Bridget in The Nanny Diaries (2007, with Scarlett Johansson), and her career took off as Martha Hanson on the FX spy drama The Americans (2013–2017, 37 episodes, with Matthew Rhys and Keri Russell), for which she received a Primetime Emmy nomination in 2017. On stage she made her Broadway debut as Jessie in Sweat (2017, Studio 54), and has performed with the Barrow Group and The New Group in New York, including Marie and Bruce and Rafta, Rafta (Off-Broadway).

Her other notable television credits include Marjorie in Sneaky Pete (2015–2019, 14 episodes, Amazon Prime), Pauline Jameson in Feud: Bette and Joan (2017, 7 episodes, FX), Ruth Wardell in Snowpiercer (2020–2024, 40 episodes, TNT), Valerie Blount in Castle Rock (2019, 6 episodes, Hulu), Ms. Roswell in Hollywood (2020, Netflix), and Julia Jayne in The Madness (2024, 4 episodes). Her film credits include Justine in The Accountant (2016, directed by Gavin O'Connor, with Ben Affleck), Ada in Ask for Jane (2018), Virginia Thomas in Confirmation (2016, HBO, with Kerry Washington), and voice roles in The Accountant 2 (2025) and Predator: Badlands (2025).