| Official Name: | Douglas Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Iroquois County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Iroquois County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Iroquois |
| Established Title: | Established |
| Established Date: | May 1858 |
| Area Total Sq Mi: | 44.72 |
| Area Land Sq Mi: | 44.65 |
| Area Water Sq Mi: | 0.07 |
| Area Water Percent: | 0.16 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 47.1 |
| Elevation M: | 199 |
| Elevation Ft: | 653 |
| Coordinates: | 40.7706°N -88.0042°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 60930, 60938, 60955, 60959, 60970 |
| Blank Name: | FIPS code |
| Blank Info: | 17-075-20487 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 2008 |
| Unit Pref: | Imperial |
Douglas Township is one of twenty-six townships in Iroquois County, Illinois, USA. As of the 2010 census, its population was 2,104 and it contained 923 housing units.[2] Douglas Township was formed from a portion of Onarga Township in May 1858.
According to the 2010 census, the township has a total area of, of which (or 99.84%) is land and (or 0.16%) is water.[2]
(This list is based on USGS data and may include former settlements.)
The township contains Wenger Cemetery and St. Mary's Cemetery.