The Thirty Years' War was a series of wars in Europe lasting from 1618 to 1648.

Thirty Years' War or Thirty Years War may also refer to:

• The Mauritanian Thirty Years' War of 1644–74 (in Northwest Africa), also called Char Bouba war
• Second Thirty Years' War, a term sometimes used to encompass the wars in Europe from 1914 to 1945
• The Dano-Bengali Thirty Years' War; a term sometimes used to describe the Dano-Mughal War from 1642-1698

• The Thirty Years War, 1938 history book by C. V. Wedgwood
• "The 30 Years War", former name of the band The Fall of Troy
• Thirty Years War (wargame), a 1976 board wargame

This disambiguation page lists articles associated with the title Thirty Years War.
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