| Official Name: | Marion Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kansas |
| Subdivision Type2: | County |
| Subdivision Name2: | Bourbon |
| Area Total Km2: | 259.62 |
| Area Land Km2: | 259.12 |
| Area Water Km2: | 0.5 |
| Area Total Sq Mi: | 100.24 |
| Area Land Sq Mi: | 100.05 |
| Area Water Sq Mi: | 0.19 |
| Area Water Percent: | 0.19 |
| Population As Of: | 2000 |
| Population Total: | 1165 |
| Population Density Km2: | 4.5 |
| Population Density Sq Mi: | 11.6 |
| Elevation M: | 266 |
| Elevation Ft: | 873 |
| Coordinates: | 37.8347°N -94.9906°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0474535 |
Marion Township is a township in Bourbon County, Kansas, USA. As of the 2000 census, its population was 1,165.
Marion Township covers an area of 100.24sqmi and contains two incorporated settlements: Bronson and Uniontown. According to the USGS, it contains five cemeteries: Hatch, Marion, Mount Zion, Turkey Creek and Walnut Hill.
The streams of Dyer Creek, Hinton Creek, Turkey Creek, Walnut Creek, West Fork Dry Wood Creek and Wolfpen Creek run through this township.