哈瑟河是德国的河流，位于下萨克森州，属于埃姆斯河的右支流，河道全长169.6公里，流域面积3,086平方公里，发源自条顿堡森林，河口处在基尔希伦格尔恩。

The Hase is a 193-kilometre (120 mi) long river in Lower Saxony, Germany. It is a right tributary of the Ems, but part of its flow goes to the Else, that is part of the Weser basin. Its source is in the Teutoburg Forest, south-east of Osnabrück, on the north slope of the 307-metre (1,007 ft) high Hankenüll hill.