Warren County Courthouse and Circuit Court Building were two historic government buildings and a national historic district located at Warrenton, Warren County, Missouri. They were two brick hipped roofed buildings. The courthouse was built between 1869 and 1871 and was a two-story, Classical Revival style building. It had a symmetrical plan, cast-iron columns, rounded-arch windows, recessed arch entrance doors, and cupola. The Circuit Court Building was built in 1866 and was a two-story building with iron shutters. The buildings have been demolished.
It was listed on the National Register of Historic Places in 1972.