Quadruple Alliance

• Allies of World War II
• American Civil War
• Central Powers
• Concession of Evoramonte
• Four Policemen
• Harry Turtledove
• Quadruple Alliance (1673)
• Quadruple Alliance (1815)
• Quadruple Alliance (1912-1913)
• Quadruple Alliance (1915-1918)
• Quintuple Alliance
• Southern Victory Series
• Treaty of Warsaw (1745)
• Triple Alliance (disambiguation)
• Triple Entente
• War of the Quadruple Alliance