Brooke Bloom (born Brooke Ann Bloom, 29 September 1978 in Los Angeles, California, USA) – American stage, film, and television actress. A veteran of the New York Off-Broadway scene, she won an Obie Award for Best Actress and received a Drama Desk Award nomination for her performance in Clare Barron's You Got Older (2014), and was nominated for a Tony Award for The Outsiders.

Her most notable film roles include Ronah in She's Lost Control (2014, for which she won Best Actress at the Thessaloniki International Film Festival), Astrid Black in Extremely Loud & Incredibly Close (2011), Paige in He's Just Not That Into You (2009), Cousin Jen in All the Boys Love Mandy Lane (2006), Mary Ann in Marriage Story (2019), Rachel in Minyan (2020), and Bridget in The Surrogate (2020). On television she is best known for Rebecca Rogers in Gypsy (2017, 10 episodes), Pam Bailey in Homecoming (2018, 6 episodes), Clara in I Know What You Did Last Summer (2021, 8 episodes), Hermione in Kindred (2022), and Miss Grant in The Gilded Age (2022). She has also appeared in The Sinner (2020), Evil (2019), Atlanta (2022), White Noise (2022), Before the World Set on Fire (2023), and A Man in Full (2024).