| Official Name: | Knife Lake Township, Minnesota |
| Settlement Type: | Township |
| Pushpin Map: | Minnesota#USA |
| Pushpin Label: | Knife Lake Township |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within Minnesota and the United States |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Minnesota |
| Subdivision Type2: | County |
| Subdivision Name2: | Kanabec |
| Unit Pref: | Imperial |
| Area Total Km2: | 82.4 |
| Area Land Km2: | 79.4 |
| Area Water Km2: | 3.0 |
| Area Total Sq Mi: | 31.8 |
| Area Land Sq Mi: | 30.7 |
| Area Water Sq Mi: | 1.1 |
| Population As Of: | 2020 |
| Population Total: | 1212 |
| Population Density Km2: | 13.2 |
| Population Density Sq Mi: | 39.4 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 322 |
| Elevation Ft: | 1056 |
| Coordinates: | 45.9478°N -93.2986°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 55051 |
| Area Code: | 320 |
| Blank Name: | FIPS code |
| Blank Info: | 27-33560[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0664641[2] |
Knife Lake Township is a township in Kanabec County, Minnesota, United States. The population was 1,212 at the 2020 census.
According to the United States Census Bureau, the township has a total area of 31.8sqmi, of which 30.7sqmi is land and 1.1sqmi (3.61%) is water.
At the 2020 census, there were 1,212 people, 488 households, and 359 families residing in the township. The population density was . There were 649 housing units at an average density of . The racial make-up of the township was 96.20% White, 0.33% African American, 0.41% Native American, 0.58% Asian, 0.33% from other races and 2.15% from two or more races. Hispanic or Latino of any race were 1.16% of the population.
There were 488 households, of which 29.9% had children under the age of 18 living with them, 56.6% were married couples living together, 5.1% had a female householder with no spouse present and 11.9% had a male householder with no spouse present. 26.4% were non-families. 18.9% of all households were made up of individuals and 8.2% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.03.
24.2% of the population were under the age of 18, 4.5% from 18 to 24, 21.3% from 25 to 44, 32.5% from 45 to 64 and 17.6% were 65 years of age or older. The median age was 45 years. For every 100 females, there were 90.9 males.
The median household income was $102,692 and the median family income was $106,417. Males had a median income of $74,250 and females $21,625. The per capita income $42,132. About 6.7% of the population were below the poverty line, including 5.1% of those under age 18 and 3.5% of those age 65 or over.