The Ruins of Undermountain
| Author | Ed Greenwood |
|---|---|
| Genre | Role-playing game |
| Publisher | TSR |
Publication date | 1991 |
| Media type | Boxed set |
| Pages | 128 |
| ISBN | 9781560760610 |
The Ruins of Undermountain is a boxed set for the Forgotten Realms campaign setting for the second edition of the Advanced Dungeons & Dragons fantasy role-playing game. The set was written by Ed Greenwood and published by TSR. It featured box cover art by Brom. and was published in 1991.