Black Hawk Township is one of seventeen rural townships in Black Hawk County, Iowa, United States.

As of the 2000 census, its population was 2,494.

Black Hawk Township covers an area of 31.37 square miles (81.2 km2) and contains one incorporated settlement, Hudson.

According to the USGS, it contains three cemeteries: Cedar Valley, Hudson and Zion Lutheran.

This article about the geography of Black Hawk County, Iowa is a stub.