2021 Winnebago County Fair
- Dates: August 4, 2021 - August 8, 2021
- Recurrence: Recurring daily
- Time: 8:00 AM to 4:00 PM
The Winnebago County Fair is an annual event held at the Sunnyview Expo Center in Oshkosh, WI. 2021 marks the 166th year of this long-standing tradition founded on education, agriculture, entertainment, and affordable family fun.