| Official Name: | South Harrison Township |
| Settlement Type: | Township |
| Pushpin Map: | Arkansas |
| Pushpin Map Caption: | Location in Arkansas |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Boone |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 27.175 |
| Area Land Sq Mi: | 27.101 |
| Area Water Sq Mi: | 0.074 |
| Population As Of: | 2010 |
| Population Total: | 7,590 |
| Population Density Sq Mi: | 280.06 |
| Coordinates: | 36.1905°N -93.1345°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | Zip Code |
| Postal Code: | 72601 (Harrison) |
| Area Code: | 870 |
South Harrison Township is one of twenty current townships in Boone County, Arkansas, USA.[1] As of the 2010 census, its total population was 7,590.
Although the township includes a significant portion of the city of Harrison, it also encompasses rural areas. Prior to 1950, this township, along with North Harrison Township, were part of a single Harrison Township. Boundary lines may have been different between the former single Harrison Township and the two modern day townships.
According to the United States Census Bureau, South Harrison Township covers an area of 27.175sqmi; 27.101sqmi of land and 0.074sqmi of water.
The population history includes the population of that portion of the city of Harrison which is included within the boundaries of this township.