Liberty Township is one of sixteen townships in Hancock County, Iowa, USA. As of the 2000 census, its population was 276.
Liberty Township was originally called German Township, and under the latter name was organized in 1878. It was originally settled chiefly by Germans, hence its former name.
In the 20th century, German Township was renamed Liberty Township due to Anti-German sentiment during World War I.
According to the United States Census Bureau, Liberty Township covers an area of 36.14 square miles (93.61 square kilometers); of this, 36.09 square miles (93.48 square kilometers, 99.86 percent) is land and 0.05 square miles (0.13 square kilometers, 0.14 percent) is water.
The township contains Liberty Cemetery.