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

• Lothair I (795–855), a King of Italy and Holy Roman Emperor
• Lothair II of Lotharingia (825–869), a king, son of Lothair I
• Lothair, son of Charles the Bald, Abbot of Saint-Germain-des-Prés
• Lothair of Italy (died 950), a King of Italy
• Lothair of France (941–986), a King of France
• Lothair III, Holy Roman Emperor (1075–1137)

Lothair can also refer to:

• Lothair, Georgia, an unincorporated town in the United States
• Lothair, Mpumalanga, a town in South Africa
• Lothair (novel), an 1870 novel by Benjamin Disraeli

The Italian form Lotterio could refer to:

• Lotterio Filangieri I
• Lotterio Filangieri II

See also

• Lothar

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