Blingdenstone was a svirfneblin city in the Forgotten Realms setting of the Dungeons & Dragons fantasy role-playing game. Drizzt Do'Urden spent many weeks there (in the company of Burrow Warden Belwar Dissengulp) after surviving for ten years in the Underdark by himself. The city had iron doors at the main entrance. It was ruled by King Schniktik.
Preceding their attack on Mithral Hall, Menzoberranyr troops entered Blingdenstone to find it abandoned. The deep gnomes had fled the approach of the advancing drow but returned to their city sometime after the drow army had passed through. Most Honored Burrow Warden Belwar Dissengulp led a small force of svirfnibli in a scouting/rear attack move that aided in the defense of Keepers Dale during the Battle for Mithril Hall.
Several years later, the drow destroyed Blingdenstone in retaliation, summoning dozens of bebilith demons that slaughtered most of its inhabitants. The survivors fled to settle in the Silver Marches.