U
- Udonia: a central European country mentioned in a single episode on the Nickelodeon show Drake and Josh.
- Ulgia: a politically unstable country from the anime Noir.
- Ulmreich: Southern European state in James Elroy Flecker's King of Alsander (1914).
- Urdluvia: Borders on Rongovia. Known only from a map of Rongovia in the Rongovian Embassy to the USA In Trumansburg.
Read more about this topic: List Of Fictional European Countries