Melanie Jayne Lynskey (born 16 May 1977) is a New Zealand actress and voice actress. She is known for her portrayals of soft-spoken, yet quirky and often flawed women. She is the recipient of several accolades, including a New Zealand Film Award, a Hollywood Film Award, and a Sundance Special Jury Award, as well as Critics' Choice Award, Gotham Award and Golden Nymph Award nominations.
Lynskey made her film debut at age 17, starring as a teenage murderess in Heavenly Creatures (1994). After moving to the United States, she built a career playing various supporting parts, in films such as Ever After (1998), Coyote Ugly (2000), Sweet Home Alabama (2002), Shattered Glass (2003), Flags of Our Fathers (2006), Away We Go, Up in the Air, The Informant! (all 2009), Win Win (2011), and The Perks of Being a Wallflower (2012).
Lynskey received critical acclaim for her performance in Hello I Must Be Going (2012), which proved to be a turning point in her career. Subsequent lead roles in Happy Christmas (2014), The Intervention (2016) and I Don't Feel at Home in This World Anymore (2017) have established her as a prominent figure in the American independent film community.Outside of film, Lynskey achieved fame with her portrayal of Rose on the CBS sitcom Two and a Half Men (2003–15). From 2015 to 2016, she starred as Michelle Pierson on the HBO series Togetherness. She provided the voice of Beatrice in the Cartoon Network miniseries Over the Garden Wall (2014), and Megan on the Disney XD series Future-Worm! (2016–18). In 2018, she starred as Molly Strand on the Hulu series Castle Rock.
She is also known as Melanie Jayne Lynskey.