| Official Name: | Blue Grass Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Scott |
| Area Total Km2: | 85.23 |
| Area Land Km2: | 84.52 |
| Area Water Km2: | 0.71 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 32.91 |
| Area Land Sq Mi: | 32.63 |
| Area Water Sq Mi: | 0.28 |
| Area Water Percent: | 0.83 |
| Population As Of: | 2000 |
| Population Total: | 3592 |
| Population Density Km2: | 42.5 |
| Population Density Sq Mi: | 110.1 |
| Elevation M: | 215 |
| Elevation Ft: | 705 |
| Coordinates: | 41.5553°N -90.7167°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0467468 |
Blue Grass Township is a township in Scott County, Iowa, United States. As of the 2000 census, its population was 3,592.
Blue Grass Township covers an area of 32.91sqmi and contains two incorporated settlements: Blue Grass and Walcott. According to the USGS, it contains two cemeteries: Kisenmacher and Walcott.