| Official Name: | Fayville, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Alexander |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 344 |
| Coordinates: | 37.1647°N -89.4267°W |
| Area Code: | 618 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 422694 |
Fayville is an unincorporated community in Alexander County, Illinois, United States. Fayville is located along the Mississippi River south of Thebes.