Shimmergloom is a powerful dragon, a fictional character from the Forgotten Realms campaign setting based on the Dungeons & Dragons fantasy role-playing game. He appears in the book Streams of Silver by R.A. Salvatore.

He is blacker than the darkest night. Not a natural dragon as most know it, he is a denizen of the Plane of Shadow. This plane is said to be a dark version of the known Material Plane, a fact attributed to Shimmergloom's dark scales. Respected even back in his own plane of existence, Shimmergloom has now moved permenatly to the Material Plane, served by an army of grey dwarves, or duergar as they are frequently named.

A key player in the invasion of Mithral Hall, this demon dragon's breath did not kill as most dragons do. Instead it beset the target with an impenetrable wave of despair, causing them to either be paralyzed with fear or flee in horror. Shimmergloom resided in Mithral Hall for hundreds of years, amassing a treasure far larger than any in either the Material Plane or his native Plane of Shadows. This reign was cut short though, by the arrival of Bruenor Battlehammer on his quest to reclaim his ancestral home of Mithral Hall, accompanied by the renegade dark elf Drizzt Do'Urden, the barbarian Wulfgar, Regis the halfling, and Bruenor's adopted daughter Cattie-Brie. At the hands of this powerful group (not counting Regis) the mighty Shimmergloom was slain, his final flight taking him crashing to the bottom of a great gourge, covered in oil with a flaming Bruenor riding his back.