The Little Sugar River is a 31-mile-long (50 km)[1] tributary of the Sugar River in the U.S. state of Wisconsin.[2]
It rises in Dane County, just north of New Glarus, and flows southeasterly, joining the Sugar River at the mill pond in Albany. The river above New Glarus is considered a class II trout stream by the DNR (1980).
The river widens below New Glarus, and some large wetlands exist bordering it, along the Sugar River State Trail.