The Van Wert County Courthouse is a historic governmental building in downtown Van Wert, Ohio, United States. Located at 121 E. Main Street, the courthouse is a Second Empire structure built in 1876. It is Van Wert County's third courthouse: when the county was established, the village of Willshire was designated the county seat; Van Wert was made the seat in 1838, and a courthouse-and-jail complex was built in that community in the following year.