Quadruple Alliance may refer to:
- In the Franco-Dutch War, 1673 alliance of the Netherlands, the Holy Roman Empire, Spain, and Lorraine
- In the War of the Quadruple Alliance, 1718 alliance of Austria, France, the Dutch Republic, and Great Britain
- Quadruple Alliance (1815) after the Napoleonic Wars, of the United Kingdom, Austria, Prussia, and Russia
- Enforcers of the Concession of Evoramonte in 1834 in Portugal, namely the United Kingdom, France, Spain, and Portugal
- Central Powers in World War I in 1914–18, namely Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria
Famous quotes containing the word alliance:
“An alliance is like a chain. It is not made stronger by adding weak links to it. A great power like the United States gains no advantage and it loses prestige by offering, indeed peddling, its alliances to all and sundry. An alliance should be hard diplomatic currency, valuable and hard to get, and not inflationary paper from the mimeograph machine in the State Department.”
—Walter Lippmann (1889–1974)