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:
“Ah! how much a mother learns from her child! The constant protection of a helpless being forces us to so strict an alliance with virtue, that a woman never shows to full advantage except as a mother. Then alone can her character expand in the fulfillment of all life’s duties and the enjoyment of all its pleasures.”
—Honoré De Balzac (1799–1850)