Katheryn Winnick is a Canadian actress best known for her starring role as Lagertha, the wife of Ragnar Lothbrok who is a strong shieldmaiden and a force to be reckoned with and who fights in the shield-wall beside her husband and her Viking brothers, in the period drama television series Vikings.
Winnick appears opposite Charlie Sheen in A Glimpse Inside the Mind of Charles Swan III and alongside Al Pacino, Christopher Walken and Alan Arkin in Stand Up Guys. She can also be seen opposite Kurt Russell and Matt Dillon in the comedy The Art of the Steal.
Other career highlights include the comedy Love and Other Drugs with Jake Gyllenhaal and Anne Hathaway; the action comedy Killers with Ashton Kutcher and Katherine Heigl; and a recurring role as David Boreanaz's love interest on the primetime TV series Bones.
In 2009, she appeared with Paul Giamatti, Emily Watson and David Strathairn in Cold Souls, which earned a nod for Best Ensemble Cast at the Independent Spirit Awards.