| Lostrio | |
|---|---|
 | |
| Type: | Planet |
| Location: | Fornax Galaxy |
| Native Species: | Lostrions |
| Appearances: | Foot of Terror |
Talk Page 
| |
Lostrio is a frozen planet in the Fornax Galaxy. In the far future, its ice-based lifeforms evolve into the sentient Lostrions, which the Fourth Inspector encounters in "Foot of Terror".