The Spencer County Courthouse is a historic courthouse located at Rockport, Spencer County, Indiana. It was designed by architect Elmer E. Dunlap and built in 1921. It is a three-story, rectangular, seven bay by five bay, Neoclassical style limestone building. The main facade features a projecting five bay central section with engaged Roman Doric ordercolumns. The interior is organized around a central rotunda topped by a shallow stained glass dome.

It was listed on the National Register of Historic Places in 1999.