Margo Stilley (born November 20, 1982) is an American actress, having had roles in How to Lose Friends & Alienate People (2008), Marple: Murder Is Easy and Hippie Hippie Shake (2009), The Trip (2010), and The Royals (2016). However, she is most remembered for appearing in her debut film 9 Songs (2004), which has been described as the most sexually explicit mainstream film ever produced in the UK.

Stilley was born in Conway, South Carolina, and grew up between there and Swansboro, North Carolina. She was raised in a strict Baptist household in North America's Bible Belt. The day she turned 16 years of age, she moved out of her family home and lived on her own.