Melanie Jayne Lynskey (born 16 May 1977) is a New Zealand actress and voice actress. She first gained recognition as a teenage murderess in Peter Jackson's award-winning drama Heavenly Creatures (1994). This was followed by supporting roles in a succession of American comedies, such as Ever After (1998), Coyote Ugly (2000), and Sweet Home Alabama (2002).
After relocating permanently to Los Angeles, Lynskey established herself as a respected character actress with roles in films such as 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).
2012's Hello I Must Be Going, in which she played the lead, proved to be a turning point in her career. She has since starred in Happy Christmas (2014), The Intervention (2016), and I Don't Feel at Home in This World Anymore (2017). These and other roles have made her a prominent part of the American independent film scene.On television, Lynskey's best known role is that of Rose on the CBS sitcom Two and a Half Men (2003–15). From 2015–2016, she played Michelle Pierson on HBO's Togetherness, for which she received a nomination for the Critics' Choice Television Award for Best Supporting Actress in a Comedy Series. She also provided the voices of Beatrice in the Cartoon Network miniseries Over the Garden Wall (2014), and Megan on Disney XD's Future-Worm! (2016–18). She currently stars as Molly Strand on the Hulu series Castle Rock (2018–present).
She is also known as Melanie Jayne Lynskey.