The Wartburg is a castle overlooking the town of Eisenach, Germany.

Wartburg may also refer to:

• Wartburgkreis, a district in Germany
• Wartburg, Illinois, a suburb of Saint Louis, Missouri, United States
• Wartburg, Tennessee, a city in Morgan County, Tennessee, United States
• Wartburg, Ontario, Canada
• Wartburg, KwaZulu-Natal, a town in KwaZulu-Natal Province, South Africa

• Wartburg College, a Lutheran college in Waverly, Iowa, and Denver, Colorado
• Wartburg Adult Care Community, in Mount Vernon, New York
• Wartburg Theological Seminary, a Lutheran seminary in Dubuque, Iowa

• Wartburg (marque), former East German brand of automobiles, manufactured in Eisenach