| Official Name: | Harrison Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kansas |
| Subdivision Type2: | County |
| Subdivision Name2: | Franklin |
| Area Total Km2: | 71.74 |
| Area Land Km2: | 71.13 |
| Area Water Km2: | 0.6 |
| Area Total Sq Mi: | 27.7 |
| Area Land Sq Mi: | 27.46 |
| Area Water Sq Mi: | 0.23 |
| Area Water Percent: | 0.84 |
| Population As Of: | 2000 |
| Population Total: | 445 |
| Population Density Km2: | 6.3 |
| Population Density Sq Mi: | 16.2 |
| Elevation M: | 300 |
| Elevation Ft: | 984 |
| Coordinates: | 38.5694°N -95.2211°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0479679 |
Harrison Township is a township in Franklin County, Kansas, USA. As of the 2000 census, its population was 445.
Harrison Township covers an area of 27.7sqmi and contains no incorporated settlements. According to the USGS, it contains two cemeteries: Fouts and Roselawn.
The streams of Rock Creek and Sac Branch run through this township.
Harrison Township contains one airport or landing strip, Ottawa Municipal Airport.