| Official Name: | Black River Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Butler |
| Area Total Km2: | 133 |
| Area Land Km2: | 132.83 |
| Area Water Km2: | 0.16 |
| Area Total Sq Mi: | 51.35 |
| Area Land Sq Mi: | 51.29 |
| Area Water Sq Mi: | 0.06 |
| Area Water Percent: | 0.12 |
| Population As Of: | 2010 |
| Population Total: | 1665 |
| Population Density Km2: | 11.2 |
| Population Density Sq Mi: | 29 |
| Elevation M: | 125 |
| Coordinates: | 36.8864°N -90.4464°W |
| Blank Name: | FIPS code |
| Blank Info: | 29-06076[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0766350 |
Black River Township is one of ten townships in Butler County, Missouri, USA. As of the 2010 census, its population was 1,665.[2]
Black River Township covers an area of 51.35sqmi and contains no incorporated settlements. It contains eight cemeteries: Black River, Davidson, Harwell, Keele, Magill, Military Crossing, Nunley and Three Springs.
The streams of Aldridge Creek, Hartman Creek, Powers Creek, Swift Creek and Widow Creek run through this township.