Westport Township is one of twelve townships in Dickinson County, Iowa, USA.

As of the 2000 census, its population was 143.

[1] According to the United States Census Bureau, Westport Township covers an area of 35.93 square miles (93.1 km2); of this, 35.91 square miles (93.0 km2), 99.97 percent is land and 0.01 square miles (0.026 km2) and 0.03 percent is water.

The township contains Westport Cemetery.