| Official Name: | Poplar Bluff 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: | 359.81 |
| Area Land Km2: | 359.24 |
| Area Water Km2: | 0.57 |
| Area Total Sq Mi: | 138.92 |
| Area Land Sq Mi: | 138.7 |
| Area Water Sq Mi: | 0.22 |
| Area Water Percent: | 0.16 |
| Population As Of: | 2010 |
| Population Total: | 25878 |
| Population Density Km2: | 69.4 |
| Population Density Sq Mi: | 179.7 |
| Elevation M: | 99 |
| Coordinates: | 36.7586°N -90.3975°W |
| Blank Name: | FIPS code |
| Blank Info: | 29-59114[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0766356 |
Poplar Bluff Township is one of ten townships in Butler County, Missouri, USA. As of the 2010 census, its population was 25,878.[2]
Poplar Bluff Township covers an area of 138.92sqmi and contains one incorporated settlement, Poplar Bluff (the county seat). It contains seventeen cemeteries: Ashcraft, Black Creek, Carpenter Bend, Dooley, Friendship, Green Hill, Hvam, Marble Hill, Melton, Memorial Gardens, Morocco, Oak Hill, Podesva, Sacred Heart, Shadle, Sheppard and Woodlawn.
Carpenter Lake is within this township. The streams of Agee Creek, Black Creek, Black River, Buck Creek, Dobbs Creek, Harwell Creek, Hickory Creek, Hoedapp Creek, Indian Creek, Lewis Creek, Mill Creek, Pike Creek and Pike Slough run through this township.
Poplar Bluff Township contains three airports or landing strips: Earl Fields Memorial Airport, Hayes Field and Lucy Lee Hospital Heliport.