Quadruple Alliance
- a union or association between four powers or states, notably that formed in 1813 between Britain, Russia, Austria, and Prussia in order to defeat Napoleon and to maintain the international order established in Europe at the end of the Napoleonic Wars四国同盟（四个国家之间缔结的联盟, 尤指英国、俄国、奥地利及普鲁士为了击败拿破仑、维持拿破仑战争结束时确立的国际秩序而于1813年缔结的联盟）。