墨西哥（西班牙语：México [ˈmexiko]  读音），官方称墨西哥合众国（西班牙语：Estados Unidos Mexicanos,  listen），为北美洲的一个联邦共和制主权国家，北部同美国接壤，南侧和西侧滨临太平洋，东南为伯利兹、危地马拉和加勒比海，东部则为墨西哥湾。其面积达近二百万平方公里（超过760,000平方英里），为美洲面积第五大国家和世界面积第十四大国家。其总人口超过1.2亿，为世界第十一人口大国，西班牙语世界第一人口大国及拉丁美洲第二人口大国。墨西哥为联邦国家，包括三十二个州；其首都和最大城市墨西哥城亦为一州。

Mexico (Spanish:México [ˈmexiko]), officially the United Mexican States (Spanish:Estados Unidos Mexicanos,  listen ), is a federal republic located in North America. The country is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize and the Caribbean Sea; and to the east by the Gulf of Mexico. Covering almost two million square kilometres (over 760,000 sq mi), Mexico is the fifth largest country in the Americas by total area and the 13th largest independent nation in the world. With an estimated population of over 120 million, it is the eleventh most populous country and the most populous Spanish-speaking country in the world and the second most populous country in Latin America. Mexico is a federation comprising thirty-one states and a Federal District, its capital and largest city.