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Quadruple Alliance may refer to:
- the 1673 alliance between the Netherlands, the Holy Roman Empire, Spain and Charles IV, Duke of Lorraine, during the Franco-Dutch War;
- the 1718 alliance between Austria, France, the Dutch Republic and Great Britain during the War of the Quadruple Alliance;
- the 1815 alliance between the United Kingdom, Austria, Prussia and Russia following the Napoleonic Wars;
- the 1834 alliance between the United Kingdom, France, Spain and Portugal to enforce the Concession of Evoramonte;
- the 1915 alliance formed when Bulgaria joined the other three Central Powers of World War I (Germany, Austria-Hungary and the Ottoman Empire).
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