| Unit Pref: | Imperial |
| Settlement Type: | Township |
| Official Name: | Sublette Township |
| Image Map1: | Map of Illinois highlighting Lee County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Lee County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Lee |
| Leader Title: | Supervisor |
| Leader Name: | Daniel M. Stephenitch |
| Established Title: | Established |
| Area Total Sq Mi: | 36.52 |
| Area Land Sq Mi: | 36.5 |
| Area Water Sq Mi: | 0.02 |
| Area Water Percent: | 0.05 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 21.3 |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 732 |
| Blank Name: | FIPS code |
| Blank Info: | 17-103-73300 |
Sublette Township is located in Lee County, Illinois. As of the 2010 census, its population was 776 and it contained 373 housing units.[2] Sublette Township was originally named Hanno Township, but it was renamed at an unknown date. The village of Sublette is located within the township.
According to the 2010 census, the township has a total area of, of which (or 99.95%) is land and (or 0.05%) is water.[2]