The Mighty Nein is a fictional group of adventurers appearing in the Dungeons & Dragons web series Critical Role. Specifically it may refer to:

The Mighty Nein, the second campaign of Critical Role which is centered on this adventuring party The Mighty Nein (2025), the animated series adaptation of Critical Role second campaign

Print media Critical Role: The Mighty Nein Origins, a graphic novel series that serves as a prequel to Critical Role second campaign Critical Role: The Mighty Nein – The Nine Eyes of Lucien, a novel focused on Lucien, the antagonist of Critical Role campaign two, and his life before and after he met the Mighty Nein