| Official Name: | Ahern, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois#USA |
| Pushpin Label: | Ahern |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Kankakee |
| Subdivision Type3: | Township |
| Subdivision Name3: | Momence |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 630 |
| Coordinates: | 41.1542°N -87.6047°W |
| Area Codes: | 815 & 779 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 422390 |
Ahern is an unincorporated community in Kankakee County, Illinois, United States. Ahern is located on Illinois Route 114, 3miles east-southeast of Momence.