Twelve Mile Lake Township is one of twelve townships in Emmet County, Iowa, USA.

As of the 2000 census, its population was 202.

[1] This township is named from the Twelve Mile Lake, which was said to be twelve miles from Estherville.

[2] According to the United States Census Bureau, Twelve Mile Lake Township covers an area of 35.2 square miles (91.17 square kilometers); of this, 34.86 square miles (90.29 square kilometers, 99.03 percent) is land and 0.34 square miles (0.88 square kilometers, 0.97 percent) is water.

(This list is based on USGS data and may include former settlements.)