Dungeon cells (synonyms: prisoner cells) are small chambers used to house prisoners. They are often found in castles, evil temples, dungeons and bandit outposts. They may have small straw beds inside and latrines which may lead to a lower sewer system, cave system, or underground river. There may be escape tunnels that lead out of them or peepholes to the outside world or adjacent cells. There may be a guardroom nearby. There may be hashmarks or other writings etched onto the walls. There may be skeletal remains within. They are home to forgotten kings, crazed prisoners, and rats.

If a world has magic or super powers, dungeon cells alone may not be enough to contain powerful prisoners.