| Official Name: | Harrison Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Union |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 30.13 |
| Area Land Sq Mi: | 30.11 |
| Area Water Sq Mi: | 0.02 |
| Area Water Percent: | 0.07 |
| Population As Of: | 2020 |
| Population Total: | 429 |
| Population Density Sq Mi: | auto |
| Elevation Footnotes: | [1] |
| Elevation M: | 338 |
| Elevation Ft: | 1109 |
| Coordinates: | 39.6878°N -84.8661°W |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 47353, 47374 |
| Area Code: | 765 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 453397 |
Harrison Township is one of six townships in Union County, Indiana, United States. As of the 2020 census, its population was 429 and it contained 176 housing units.[2]
According to the 2010 census, the township has a total area of, of which (or 99.93%) is land and (or 0.07%) is water.[3]
(This list is based on USGS data and may include former settlements.)
The township contains these two cemeteries: Nutter and Railsback.