The Guder is a river of central Ethiopia. It is a tributary of the Abay or Blue Nile on the left side; tributaries of the Guder include the Dabissa and the Taranta. The Guder River has a drainage area about 7,011 square kilometers in size.
A Greek resident built the first bridge over the Guder in 1897.
Coordinates: 9°55′N 37°56′E / 9.917°N 37.933°E