伊波伊河是东欧的河流，流经斯洛伐克和匈牙利，河道全长232公里，流域面积5,151平方公里，流量每秒21立方米，最终在艾斯特根附近注入多瑙河。

Ipeľ (Slovak; pronounced [ˈipeʎ]) or Ipoly (Hungarian) (German: Eipel, archaic Slovak: Jupoľ ) is a 232-kilometre (144 mi) long river in Slovakia and Hungary, tributary to the river Danube. Its source is in central Slovakia in the Slovenské rudohorie Mountains. It flows south to the Hungarian border, and then southwest, west and again south along the border until it flows into the Danube near Szob.