Tieos was a planet in the Abrion sector of the Outer Rim Territories completely covered by grasslands. Early in the Galactic Civil War, Tieos was considered to hold strong potential as a future agricultural planet. It was the site of an Imperial base during the Galactic Civil War.
- Star Wars: Rebellion (First appearance)
- The Star Wars Sourcebook (First mentioned)
- Star Wars Sourcebook, Second Edition
- Star Wars: Rebellion: Prima's Official Strategy Guide
- The Essential Atlas
- Star Wars: Imperial Handbook: A Commander's Guide