Glenquicken stone circle or Billy Diamond's Bridge stone circle () is an oval stone circle with a central pillar, two miles east of Creetown, Dumfries and Galloway. The outer ring is formed of 29 stones. Aubrey Burl has called it "the finest of all centre-stone circles." It is a scheduled monument.
Two other circles to the north-west were marked on the Six-inch First Edition Ordnance Survey map. Alexander Thom planned these in 1939, but they are no longer visible.