Haley Lu Richardson (born March 7, 1995) is an American actress. Following early television roles on the Disney Channel sitcom Shake It Up (2013) and the ABC Family supernatural drama Ravenswood (2013–2014), she acted in the coming-of-age film The Edge of Seventeen (2016) and the psychological horror film Split (2016).

Richardson had her breakout role in the independent drama Columbus (2017) for which she received a Gotham Independent Film Award for Best Actress nomination. She continued to appear in critically acclaimed independent films such as Support the Girls (2018), Unpregnant (2020), and After Yang (2022). In 2022, she appeared in the HBO series The White Lotus.

Early life
Haley Lu Richardson was born in Phoenix, Arizona, the daughter of Valerie, a marketing and branding professional, and Forrest L. Richardson, a golf course architect. Richardson attended Villa Montessori through middle school, then Arcadia High School. She was a regular in theatrical productions and regional dance competitions throughout the Southwest. From 2001 to 2011 she was a leading dancer in Phoenix's Cannedy Dance Company. In 2011, she moved to Hollywood, California.