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:
“It is a power stronger than will.... Could a stone escape from the laws of gravity? Impossible. Impossible, for evil to form an alliance with good.”
—Isidore Ducasse, Comte de Lautréamont (1846–1870)