The universe in which all of Brandon Sanderson's epic fantasy books take place. Concepts currently associated with the Cosmere are Shards, Adonalsium, and the three realm structure.
Characters associated with the Cosmere at large: Hoid, 17th Shard, Adonalsium
Current worlds of the Cosmere: Roshar, world of The Stormlight Archive, Scadrial, world of Mistborn, Sel, world of Elantris, Nalthis, world of Warbreaker