| Official Name: | Hahnaman, 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: | Whiteside |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 656 |
| Coordinates: | 41.6317°N -89.635°W |
| Area Code: | 815 & 779 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 422772 |
Hahnaman is an unincorporated community in Whiteside County, in the U.S. state of Illinois.
The Hahnaman post office closed in 1920.[1] The community was named from its location in Hahnaman Township.[2]