| Official Name: | Winnebago, Wisconsin |
| Pushpin Map: | Wisconsin#USA |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Winnebago |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 771 |
| Coordinates: | 44.0758°N -88.525°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 54985 |
| Area Code: | 920 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1577889 |
Winnebago is an unincorporated community in the Town of Oshkosh in Winnebago County, Wisconsin, United States.[1] It is located just outside the northeast edge of the city of Oshkosh.[2] The Winnebago Mental Health Institute is located in Winnebago.[3] The ZIP code is: 54985.[4] U.S. Route 45 ran through the community until the road's route was moved west; the former route is now occupied by County Highway A.
The community residents began receiving water and sewer utilities from the Winnebago Health Institute in the 1940s.[5] In April 2017, 24 community residents received a letter from the state of Wisconsin stating that it will be shutting off their water and sewer on August 1, 2017. The institute receives water from the City of Oshkosh which annexed the institute in 1998; the institute had sent letters to the town and city asking for them to come up with a solution.