| Official Name: | Poskin, Wisconsin |
| Pushpin Map: | Wisconsin#USA |
| Pushpin Label: | Poskin |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Barron |
| Subdivision Type3: | Town |
| Subdivision Name3: | Clinton |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1194 |
| Coordinates: | 45.4092°N -91.9617°W |
| Area Code: | 715 & 534 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1571817 |
Poskin (also Cosgrove, Poskin Lake) is an unincorporated community in the town of Clinton, Barron County, Wisconsin, United States. Poskin is located on U.S. Route 8 5.5miles west of Barron.
Poskin was platted in 1887, and named for Mary Poskin, the wife of a businessperson in the lumber industry.[1] Poskin had a post office, which opened on March 30, 1887, and closed on July 10, 1993.[2] [3]