The Unknown Quantity
- Xyoo: 1919
- Ncig Teb Chaws: United States of America
- Genre: Drama
- Studio: Vitagraph Company of America
- Cov ntsiab lus: lost film
- Tus Thawj Coj: Thomas R. Mills
- Pov Pob Tseg: Corinne Griffith, Huntley Gordon, Harry Davenport, Jack McLean, Jack Ridgeway, F.R. Buckley
