Old Slave Mart

The Old Slave Mart is a building located at 6 Chalmers Street in Charleston, South Carolina that once housed an antebellum-period slave-auction gallery. Constructed in 1859, the building is believed to be the last extant slave auction facility in South Carolina. In 1975, the Old Slave Mart was added to the National Register of Historic Places for its role in Charleston's African American history. Today, the building houses the Old Slave Mart Museum.

The Old Slave Mart was originally part of a slave market known as Ryan's Slave Mart, which covered a large enclosed lot between Chalmers and Queen Streets. Charleston City Councilman Thomas Ryan established the private auction facility in 1856 after a citywide ban on public slave auctions. Slave auctions were held at the site until approximately 1863; in 1865, the Union Army occupied Charleston and closed Ryan's Mart. The Old Slave Mart Museum has operated on and off since 1938.