| Official Name: | Warren Township Marion County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Marion |
| Government Type: | Indiana township |
| Area Total Km2: | 125.45 |
| Area Land Km2: | 125.2 |
| Area Water Km2: | 0.25 |
| Area Total Sq Mi: | 48.44 |
| Area Land Sq Mi: | 48.34 |
| Area Water Sq Mi: | 0.1 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 106191 |
| Population Density Km2: | auto |
| Named For: | Joseph Warren |
| Elevation Footnotes: | [2] |
| Elevation M: | 262 |
| Elevation Ft: | 860 |
| Coordinates: | 39.775°N -86.0172°W |
| Blank Name: | FIPS code |
| Blank Info: | 18-80144[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 453976 |
Warren Township is one of nine townships in Marion County, Indiana. As of the 2020 census, its population was 106,191, up from 99,433 at 2010.[4] Warren Township was named for Joseph Warren.[5]
Warren Central High School, Creston Middle School, and Raymond Park Middle School are located within the township.