Viggo Elith William Pio (3 July 1887 – 10 February 1983) was a Danish actor of stage, screen, radio and television.
He is most noted for starring roles in films such as Carl Theodor Dreyer's Leaves from Satan's Book, Johan Jacobsen's Jenny and the Soldier and Benjamin Christensen's Häxan.
In Denmark Pio was also well known for his numerous roles on local radio theatre, where his characteristic voice was an invaluable asset.
In 1931, well known from his work at the Royal Theatre, Pio starred in his first sound feature, Hotel Paradis, in the role of Fridolin.
As part of a small group of participants in an emerging Danish cinema, Pio was a favorite of many directors, working more than once with Benjamin Christensen, Viggo Larsen, Mogens Skot-Hansen, Emanuel Gregers, Ole Palsbo, Gabriel Axel, Knud Leif Thomsen, Lau Lauritzen Jr. & Alice O'Fredericks, Svend Methling, and the legendary Carl Theodor Dreyer.