Lorraine (; Lorrain: Louréne; Lorraine Franconian: Lottringe; German: ) is one of the 27 regions of France. The administrative region has two cities of equal importance: Metz, the regional prefecture and Nancy. Lorraine's name is derived from the separate medieval kingdom of Lotharingia, which in turn was named for Charlemagne's grandson Lothair I, who was Lorraine's first king.
The regional name Lorraine can refer to two entities: one a tradition of cultural, regional, and national identity that came into being in the year 843 A.D., the other an administrative political region of the Republic of France, with the borders it arbitrarily acquired over many separate historical events. As a region in modern France, it consists of the four departments Meurthe-et-Moselle, Meuse, Moselle and Vosges, and contains 2,337 communes. Lorraine maintains nearly half of France's border with Germany, and also borders Belgium and Luxembourg (independent nations of historical Upper Lorraine which still officially speak variants of Lorraine's historical Franconian language, Lorraine Franconian).