Baltupis
The Baltupis is a river of Kėdainiai district municipality, Kaunas County, central Lithuania. It flows for 4.8 kilometres and has a basin area of 2.7 km². It is a tributary of the Nevėžis River. The Baltupis goes on the edge between Sirutiškis village and the northern limit of Kėdainiai.
The name Baltupis means 'white river' in Lithuainian.