| Official Name: | Island Grove Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Nebraska |
| Subdivision Type2: | County |
| Subdivision Name2: | Gage |
| Area Total Km2: | 92.91 |
| Area Land Km2: | 92.88 |
| Area Water Km2: | 0.03 |
| Area Total Sq Mi: | 35.87 |
| Area Land Sq Mi: | 35.86 |
| Area Water Sq Mi: | 0.01 |
| Area Water Percent: | 0.03 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 69 |
| Population Density Km2: | auto |
| Elevation M: | 401 |
| Elevation Ft: | 1316 |
| Coordinates: | 40.1386°N -96.5289°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0838070 |
Island Grove Township is one of twenty-four townships in Gage County, Nebraska, United States. The population was 69 at the 2020 census.[1] A 2021 estimate placed the township's population at 69.[1]
A small portion of the Village of Liberty lies within the Township.