The Ikalian asteroid belt was a ring of asteroids in the Kriosian system. Among the elements in the asteroids were actinides.

In 2367, Kriosian rebels, fighting to regain their independence from the Klingon Empire, hid in the Ikalian asteroid belt, using the actinides to hide from sensor scans. While hiding in the belt, they attacked a Ferengi freighter and a Cardassian freighter. (TNG: "The Mind's Eye")