| Official Name: | Osage Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Camden |
| Area Total Km2: | 68.52 |
| Area Land Km2: | 53.1 |
| Area Water Km2: | 15.42 |
| Area Total Sq Mi: | 26.46 |
| Area Land Sq Mi: | 20.5 |
| Area Water Sq Mi: | 5.96 |
| Area Water Percent: | 22.5 |
| Population As Of: | 2010 |
| Population Total: | 4945 |
| Population Density Km2: | 72.2 |
| Population Density Sq Mi: | 186.9 |
| Elevation Footnotes: | [1] |
| Elevation M: | 215 |
| Elevation Ft: | 705 |
| Coordinates: | 38.0678°N -92.7222°W |
| Blank Name: | FIPS code |
| Blank Info: | 29-55046[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0766392 |
Osage Township is one of eleven townships in Camden County, Missouri, USA. As of the 2010 census, its population was 4,945.
Osage Township was established in 1841, taking its name from the Osage River.[3]
Osage Township borders Jasper Township to the north and west, Pawhuska Township to the east, Kiheka Township to the east, and Osceola Township to the southwest.
Osage Township covers an area of 26.46sqmi and contains two incorporated settlements: Linn Creek and Osage Beach. It contains four cemeteries: Hall, Hopkins, Memorial and Old Erie.
The streams of Blue Springs Branch, Linn Creek, North Fork Linn Creek and South Fork Linn Creek run through this township.
Osage Township contains two airports or landing strips: Hospital Property Heliport and Linn Creek-Grand Glaize Memorial Airport.