Warren County Courthouse (New Jersey)

The Warren County Courthouse is in Belvidere, the county seat of Warren County, New Jersey. It is part of the 13th vicinage.

It was built 1826 by L. H. Lewis on land donated by Garret Dorset Wall. It was renovated in 1953 and expanded with an addition in 1961.

It is a contributing property to the Belvidere Historic District, added to the National Register of Historic Places on October 3, 1980.