奥坦河是法国的河流，位于该国东北部默尔特-摩泽尔省和默兹省，属于希耶河的左支流，河道全长67公里，流域面积256平方公里，平均流量每秒2.91立方米。

• http://www.geoportail.fr
• The Othain at the Sandre database

The Othain is a 67-kilometre (42 mi) long river in the Meurthe-et-Moselle and Meuse départements, northeastern France. Its source is at Gondrecourt-Aix, in the Woëvre. It flows generally northwest. It is a left tributary of the Chiers into which it flows between Villécloye and Montmédy.