Old Mississippi State Capitol
| Old State Capitol | |
| Old State Capitol in 2018 | |
| Location | 100 N. State St., Jackson, Mississippi | 
|---|---|
| Coordinates | 32°17′57″N 90°10′48″W / 32.29917°N 90.18000°W | 
| Built | 1839 | 
| Architect | William Nichols | 
| Architectural style | Greek Revival | 
| NRHP reference No. | 69000087 | 
| USMS No. | 049-JAC-0002-NHL-ML | 
| Significant dates | |
| Added to NRHP | November 25, 1969 | 
| Designated NHL | December 14, 1990 | 
| Designated USMS | July 14, 1986 | 
The Old Mississippi State Capitol, also known as Old Capitol Museum or Old State Capitol, served as the Mississippi statehouse from 1839 until 1903. The old state capitol was added to the National Register of Historic Places in 1969. In 1986, the structure was designated a Mississippi Landmark and became a National Historic Landmark in 1990.