Viggo Peter Mortensen Jr. R is an American actor, artist, musician and filmmaker. He is the recipient of various accolades, including nominations for three Academy Awards for Best Actor, three BAFTA Awards, four Golden Globe Awards, and an Independent Spirit Award.

Witness is a 1985 American neo-noir crime thriller film directed by Peter Weir. The film stars Harrison Ford, Kelly McGillis and Lukas Haas, with Jan Rubeš, Danny Glover, Josef Sommer, Alexander Godunov, Patti LuPone and Viggo Mortensen. Its plot focuses on a police detective protecting an Amish woman and her son, who becomes a target after he witnesses a brutal murder in a Philadelphia railway station.