Allen Township is a township in Kingman County, Kansas, United States. As of the 2000 census, its population was 109.
Allen Township covers an area of 36.67 square miles (94.96 square kilometers); of this, 0.25 square miles (0.65 square kilometers) or 0.68 percent is water. The stream of Coon Creek runs through this township.
The township contains one cemetery, Mount Pleasant.