| Official Name: | Lake Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Clay |
| Area Total Km2: | 93.12 |
| Area Land Km2: | 86.41 |
| Area Water Km2: | 6.71 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.95 |
| Area Land Sq Mi: | 33.36 |
| Area Water Sq Mi: | 2.59 |
| Area Water Percent: | 7.21 |
| Population As Of: | 2000 |
| Population Total: | 240 |
| Population Density Km2: | 2.8 |
| Population Density Sq Mi: | 7.2 |
| Elevation M: | 412 |
| Elevation Ft: | 1352 |
| Coordinates: | 43.2053°N -94.9767°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468179 |
Lake Township is a township in Clay County, Iowa, USA. As of the 2000 census, its population was 240.
Lake Township was created in 1882. It is named from the large number of lakes within its borders.[1]
Lake Township covers an area of 35.95sqmi and contains no incorporated settlements.
Dan Green Slough, Mud Lake, Round Lake and Trumbull Lake are within this township.