United Provinces of Central America
- a former federal republic in Central America, formed in 1823 to unite the states of Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica, all newly independent from Spain. The federation collapsed in 1838.中美洲联邦（1823年由刚脱离西班牙后独立的危地马拉、萨尔瓦多、洪都拉斯、尼加拉瓜组成的一个前中美洲联邦共和国, 1838年解体）。