Diana Dale Dickey (born September 29, 1961) is an American character actress who has worked in theater, film, and television. She began her career on stage, performing in the 1989 Broadway version of The Merchant of Venice, before appearing in popular revivals of A Streetcar Named Desire, Sweeney Todd and more off-Broadway and in regional theaters. She's the recipient of two Ovation Awards for her stage work in Los Angeles.Known as a "consummate character actor," Dickey made her screen debut in 1995. She won the Independent Spirit Award for Best Supporting Female for her breakthrough performance as Merab in the 2010 independent drama film Winter's Bone. Over her career, she has appeared in more than 60 movies, most notably Changeling (2008), Super 8 (2011), Iron Man 3 (2013), Regression (2015), Hell or High Water (2016), Leave No Trace (2018) and Bloodline (2018). Her television credits including recurring roles on My Name Is Earl (2005–09), Breaking Bad (2009), True Blood (2012–13), Justified (2014), and Claws (2017–22). She also was a regular cast member on the second season of the HBO comedy series Vice Principals (2017), co-starred in the Netflix miniseries Unbelievable (2019), and featured in Amazon's 2022 comedy-series reboot of A League of Their Own.

Dickey received widespread acclaim from critics for her lead performance in the 2022 romantic drama film A Love Song, for which she was nominated for the Independent Spirit Award for Best Lead Performance and the Gotham Independent Film Award for Outstanding Lead Performance.