The Old Marion County Courthouse is a historic county courthouse building in Tazewell, Georgia, which served as the county seat of Marion County, Georgia for a short time. It was built in 1848. The county seat was moved in 1850 to what is now Buena Vista, Georgia. The site is commemorated with a historical marker. The building has also served as Marion Lodge No. 14 F. & A.M. (Free and Accepted Masons).The building was added to the National Register of Historic Places on September 18, 1980. It is located on Georgia State Route 137.
