Leroy Township is one of twenty townships in Benton County, Iowa, United States. At the 2000 census, its population was 1,099.
According to the United States Census Bureau, Leroy Township covers an area of 35.78 square miles (92.67 square kilometers); of this, 35.7 square miles (92.47 square kilometers, 99.78 percent) is land and 0.08 square miles (0.2 square kilometers, 0.22 percent) is water.
The township contains these four cemeteries: International, Old International, Pleasant Hill and Stringtown (historical).