| Official Name: | Harrison Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Iowa |
| Subdivision Type2: | County |
| Subdivision Name2: | Benton |
| Area Total Km2: | 70.07 |
| Area Land Km2: | 68.81 |
| Area Water Km2: | 1.25 |
| Area Total Sq Mi: | 27.05 |
| Area Land Sq Mi: | 26.57 |
| Area Water Sq Mi: | 0.48 |
| Area Water Percent: | 1.78 |
| Population As Of: | 2000 |
| Population Total: | 354 |
| Population Density Km2: | 5.1 |
| Population Density Sq Mi: | 13.3 |
| Elevation M: | 247 |
| Elevation Ft: | 810 |
| Coordinates: | 42.2533°N -91.9886°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP code |
| Postal Code: | 52349 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468010 |
Harrison Township is one of twenty townships in Benton County, Iowa, United States. As of the 2000 census, its population was 354.[1]
Harrison Township was founded in 1849.[2]
According to the United States Census Bureau, Harrison Township covers an area of 27.05 square miles (70.07 square kilometers); of this, 26.57 square miles (68.81 square kilometers, 98.2 percent) is land and 0.48 square miles (1.25 square kilometers, 1.78 percent) is water.
The township contains Bear Creek Cemetery.