| Official Name: | Altdorf, Wisconsin |
| Pushpin Map: | Wisconsin#USA |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Wood |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1053 |
| Coordinates: | 44.4175°N -89.9892°W |
| Area Codes: | 715 & 534 |
Altdorf is an unincorporated community in Wood County, in the U.S. state of Wisconsin.[1]
A post office was established at Altdorf in 1885, and remained in operation until 1905.[2] The community was named after Altdorf, in Switzerland, the native home of a share of the first settlers.
The community once had a schoolhouse, Altdorf School, now defunct.