| Official Name: | Dayton, Henry County, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois#USA |
| Pushpin Label: | Dayton |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Henry County |
| Subdivision Type3: | Township |
| Subdivision Name3: | Colona Township |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 184 |
| Elevation Ft: | 604 |
| Coordinates: | 41.4892°N -90.3214°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 61241 |
| Area Code: | 309 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0407006 |
Dayton is an unincorporated community in Colona Township, Henry County, Illinois, United States.
One of the oldest towns in the county, the town of Dayton was laid out in October 1836. It was once a stop on the Chicago, Dixon and Rock Island stage route.[1] The community most likely took its name after Dayton, Ohio.[2]
The town is located in the northwest part of the county just south of Cleveland.