绍约河是中欧的河流，流经斯洛伐克和匈牙利，属于蒂萨河的右支流，河道全长229公里，流域面积3,191平方公里，河畔城镇有罗日尼亚瓦。

The Sajó (Hungarian) or Slaná (Slovak) is a river in Slovakia and Hungary.

Its length is 229 km, of which 110 km is in Slovakia. Its source is in the Stolica Mountains range of the Slovak Ore Mountains. It flows through the Slovak town Rožňava and the Hungarian city Miskolc. In Hungary it flows through the county of Borsod-Abaúj-Zemplén. It flows into the River Tisza near Tiszaújváros.