乌苏卢坦是萨尔瓦多的城镇，位于该国东南部，由乌苏卢坦省负责管辖，面积139.75平方公里，海拔高度91米，2007年人口73,064，人口密度每平方公里522.82人。

Usulután is the 5th largest city in El Salvador, and capital of the Usulután Department in the south-east of El Salvador.

As of 2006, it is estimated to have population of 71,636 people. Usulután rests in a rich agricultural valley and has very high and humid temperatures most of the year as it is located close to the Pacific Ocean. The city was badly damaged by the Salvadorian earthquakes of February 2001, in addition to Hurricane Mitch in 1998.