Viggo Mortensen
- Birthday: 1958-10-20
- Place of birth: Watertown, New York, USA
- Also know as: Viggo Peter Mortensen Jr.
Viggo Peter Mortensen, Jr. (born October 20, 1958) is an American actor, writer, director, producer, musician, and multimedia artist. Born and raised in the state of New York to a Danish father and American mother, he also lived in Argentina during his childhood. He is the recipient of various accolades including a Screen Actors Guild Award and has been nominated for three Academy Awards, three BAFTA Awards, and four Golden Globe Awards.
