Sophia Anna Bush (born July 8, 1982) is an American actress, activist, director, and producer. She starred as Brooke Davis in The WB/CW drama series One Tree Hill (2003–2012), and as Erin Lindsay in the NBC police procedural drama series Chicago P.D. (2014–2017). She was a producer for and starred in the lead role of Dr. Samantha "Sam" Griffith in the medical drama Good Sam (2022).

Bush has also appeared in films, including John Tucker Must Die (2006), The Hitcher (2007), The Narrows (2008), Chalet Girl (2011), Marshall (2017), Acts of Violence (2018), and Incredibles 2 (2018). She is also known for her philanthropy work and social activism, including her work for the Time's Up movement and DoSomething.org.