What is the name of the leader of Organization XIII?

The leader of Organization XIII is Xemnas.

Xemnas is the Nobody of Xehanort, formed when Xehanort separated his heart from his body. He is ranked as Organization XIII’s first member and serves as its superior, directing the group’s operations from the World That Never Was.

The organization originally presents itself as a group of powerful Nobodies seeking to regain complete hearts. Its members are identified by titles and numbers, and many use names formed by rearranging their former human names with an added X. Xemnas’s own name is derived from “Ansem,” reflecting his connection to Ansem the Wise and Ansem, Seeker of Darkness.

Players may confuse Xemnas with Ansem or Xehanort because all three identities are linked. Ansem, Seeker of Darkness is Xehanort’s Heartless, while Xemnas is his Nobody. Saïx is a high-ranking member, but he is subordinate to Xemnas rather than the organization’s leader.