Fourth Galaxy

Galaxy 4 contained the planet Drahva. (TV: Galaxy 4) The Semestran Interlude were natives of Galaxy 4. (AUDIO: Voyage to the New World)

The Third Doctor claimed that Quinnis was located here; (PROSE: The Devil Goblins from Neptune) by another account, Quinnis was instead located in the Fourth Galaxy (PROSE: The Edge of Destruction) or the fourth universe. (TV: The Edge of Destruction)

Galaxia 4