Lothair (Latin: Lotharius; German: Lothar; French: Lothaire) is a Germanic given name, derived from the older form Clotaire (Chlotharius).

• Lothair I (795–855), King of Italy and Holy Roman Emperor
• Lothair I, Margrave of the Nordmark (940–1003)
• Lothair II of Lotharingia (825–869), a king, son of Emperor Lothair I
• Lothair II of Italy (died 950), a king
• Lothair III, Holy Roman Emperor (1075–1137), also called Lothair II
• Lothair of France (941–986), sometimes called Lothair II
• Lothair the Lame (died 865), Abbot of Saint-Germain-des-Prés
• Lothair Udo I, Count of Stade (950–994)
• Lothair Udo I, Margrave of the Nordmark (994–1057)
• Lothair Udo II, Margrave of the Nordmark (1025–1082)
• Lothair Udo III, Margrave of the Nordmark (1070–1106)

• Lothair, Georgia, in the United States
• Lothair, Montana, in the United States
• Lothair, Kentucky, in the United States
• Lothair, South Africa, a town in Mpumalanga
• Lothair (novel), by Benjamin Disraeli
• Lothair (clipper), a ship built in Britain in 1870
• M. Lothaire, pseudonym of a group of mathematicians
• Cross of Lothair
• Lothair Crystal

• Lothar (disambiguation)
• Lothaire
• Luther (disambiguation)
• Chlothar (disambiguation)

This disambiguation page lists articles associated with the title Lothair.
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