| Official Name: | Grand Tower Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Jackson County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Jackson County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Jackson |
| Established Title: | Established |
| Established Date: | November 4, 1884 |
| Area Total Sq Mi: | 33.42 |
| Area Land Sq Mi: | 31.56 |
| Area Water Sq Mi: | 1.86 |
| Area Water Percent: | 5.57 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 22.4 |
| Elevation M: | 110 |
| Elevation Ft: | 361 |
| Coordinates: | 37.6372°N -89.4733°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 62940, 62942, 62966 |
| Blank Name: | FIPS code |
| Blank Info: | 17-077-30783 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 681 |
| Unit Pref: | Imperial |
Grand Tower Township is one of sixteen townships in Jackson County, Illinois, USA. As of the 2010 census, its population was 707 and it contained 336 housing units.[2]
According to the 2010 census, the township has a total area of, of which (or 94.43%) is land and (or 5.57%) is water.[2]
A small portion of Missouri, known as Grand Tower Island, lies on the Mississippi River's eastern side adjacent to Grand Tower Township. Partially surrounded by an oxbow lake, the island can only be accessed by water or by a road that begins and ends in Illinois.[3]
(This list is based on USGS data and may include former settlements.)
The township contains these four cemeteries: Goodbread, Henson, Hudson and Walker Hill.