| Unit Pref: | Imperial |
| Settlement Type: | Township |
| Official Name: | Troy Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Will |
| Leader Title: | Supervisor |
| Established Title: | Established |
| Established Date: | November 6, 1849 |
| Area Total Sq Mi: | 35.38 |
| Area Land Sq Mi: | 34.75 |
| Area Water Sq Mi: | 0.63 |
| Area Water Percent: | 1.78 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 1323.5 |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 47447 |
| Blank Name: | FIPS code |
| Blank Info: | 17-197-76212 |
Troy Township is located in Will County, Illinois. As of the 2010 census, its population was 45,991 and it contained 17,522 housing units.[2] It contains the western edge of the city of Joliet and the entirety of the village of Shorewood.
According to the 2010 census, the township has a total area of, of which (or 98.22%) is land and (or 1.78%) is water.[2]