乌布苏省（Увс аймаг）位于蒙古国的西北部，面积69,600平方公里，人口90,037（2000年）。首府乌兰固木。

得名于乌布苏湖。

Uvs (Mongolian:Увс аймаг) is one of the 21 aimags (provinces) of Mongolia. It is located in the west of the country, 1336 km away from the national capital Ulaanbaatar. Its capital is Ulaangom which lies 936 m above sea level.

The province is named after Mongolia's biggest lake, Uvs Lake.