Parker Christian Posey (born November 8, 1968) is an American actress and musician. Posey is the recipient of a Golden Globe Award nomination, a Satellite Award nomination and two Independent Spirit Award nominations.

Posey made her film debut in Joey Breaker (1993). Following small roles in Coneheads and the cult classic Dazed and Confused (both also 1993), she was labeled "Queen of the Indies" for starring in a succession of independent films throughout the 1990s, such as Sleep with Me (1994), Frisk, Party Girl, The Doom Generation, Kicking and Screaming (all 1995), The Daytrippers (1996), Henry Fool, The House of Yes and Clockwatchers (all 1997). Her other notable film appearances include You've Got Mail (1998), Scream 3 (2000), Josie and the Pussycats (2001), Personal Velocity, The Sweetest Thing (both 2002), Blade: Trinity (2004), Superman Returns, Fay Grim (both 2006), Broken English (2007), The Eye (2008), Spring Breakdown (2009), Inside Out (2011), Irrational Man (2015), Café Society (2016), and Columbus (2017).