| Official Name: | Lake Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Humboldt |
| Established Title: | Established |
| Established Date: | 1870 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.5 |
| Area Land Sq Mi: | 36.5 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2000 |
| Population Total: | 290 |
| Population Density Sq Mi: | 8 |
| Elevation Ft: | 1148 |
| Coordinates: | 42.7822°N -94.0403°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 50545 (Hardy) |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468180 |
Lake Township is one of twelve townships in Humboldt County, Iowa, United States.[1] As of the 2000 census, its population was 290.
Lake Township was organized in 1870.[2]
According to the United States Census Bureau, Lake Township covers an area of 36.5sqmi; all of this is land.
The township contains Hardy Trinity Lutheran Cemetery and Lake Church Cemetery.[1]