| Daysville | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA Illinois Ogle County#USA Illinois |
| Pushpin Map Caption: | Location within Ogle County |
| Coordinates: | 41.9844°N -89.3183°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Ogle |
| Subdivision Type3: | Township |
| Subdivision Name3: | Oregon-Nashua |
| Leader Title: | Mayor |
| Elevation Footnotes: | [1] |
| Elevation Ft: | 699 |
| Population As Of: | 2000 |
| Population Density Sq Mi: | auto |
| Timezone1: | CST |
| Utc Offset1: | -6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | -5 |
| Postal Code Type: | ZIP code |
| Postal Code: | 61061 (Oregon) |
| Area Code: | 815 |
Daysville is an unincorporated community in Ogle County, Illinois, United States. It is located along the Rock River, southeast of Oregon.
A post office was in operation at Daysville from 1839 to 1900.[2] The community bears the name of Colonel Jehiel Day, a local pioneer.[3]
Thomas Wood Stevens (1880-1942), American artist, playwright, and theatre academic, was born in Daysville.