Dungeons & Dragons Deity
Title(s) Keeper of Secrets under the Mountain, the Silent Keeper, the Mountain Shield
Home Plane Concordant Domain of the Outlands
Power Level Intermediate
Alignment Neutral (LN tendencies)
Portfolio Mining, mountain dwarves, underground exploration
Domains Earth, Knowledge, Protection (also Cavern, Craft, Dwarf, and Metal in Forgotten Realms)
Superior Moradin

In many campaign settings for the Dungeons & Dragons role-playing game, Dumathoin is the patron of mountain dwarves, and the dwarf deity of mining and underground exploration.

Dumathoin is often given the title, "Keeper of secrets under the Mountain."

In many campaign settings, the dwarven pantheon of gods consists of the leader Moradin, as well as Abbathor, Berronar Truesilver, Clanggedin Silverbeard, Dugmaren Brightmantle, Dumathoin, Muamman Duathal, and Vergadain. Other dwarven gods may be present in different campaign settings.

Dumathoin shares the Dwarven Mountain on the Outlands with Dugmaren and Vergadain.

Dumathoin's clerics dress in brown leather. His holy days are on the new moon, and sacrifices of gems and jewels are made to him monthly.


  • Boyd, Eric L. Demihuman Deities (TSR, 1998).
  • Boyd, Eric L, and Erik Mona. Faiths and Pantheons (Wizards of the Coast, 2002).
  • Greenwood, Ed. Dwarves Deep (TSR, 1990).
  • Gygax, Gary. Unearthed Arcana (TSR, 1985).
  • McComb, Colin. On Hallowed Ground (TSR, 1996).
  • Moore, Roger E. "The Dwarven Point of View." Dragon #58 (TSR, 1982).
  • Sargent, Carl. Monster Mythology (TSR, 1992).
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