| Official Name: | Decker, Wisconsin |
| Pushpin Map: | Wisconsin#USA |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Ozaukee |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 738 |
| Coordinates: | 43.4706°N -87.8625°W |
| Area Code: | 262 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1577567 |
Decker is an unincorporated community, in the town of Belgium, Ozaukee County, Wisconsin, United States.
The community was named for the Decker family, early landowners.[1]