Charleston County Courthouse, County courthouse in Charleston, South Carolina.

The Charleston County Courthouse is a county courthouse in Charleston, South Carolina, featuring neoclassical design with large columns and a symmetrical facade. Inside, the building houses multiple judicial departments including Circuit Court, Family Court, and the Magistrate's Office.

The Charleston County Courthouse was built between 1790 and 1792 to designs by Irish architect James Hoban, on the site of the South Carolina Statehouse of 1753, which burned in 1788; the new building incorporated its ruins. George Washington visited Charleston in May 1791 and summoned Hoban to Philadelphia in June 1792; that July Hoban won the competition for the presidential mansion, later the White House. Kerrigan & Grant carried out a large renovation in 1883–1884.

The courthouse displays classical American architecture from the early 1800s and stands as a visible symbol of the city's established legal institutions. The spaces inside reflect the formal expectations that shaped how courts operated during that era.

The courthouse stands in the historic district beside the park at Washington Square, a short walk from the rest of downtown Charleston. It remains an active courthouse, so courtrooms and offices are not open to casual visitors; the courtyard can be viewed from outside. Check locally which parts, if any, admit the public before setting out.

The courtrooms were built with specific details that reflected the formal requirements of early American law courts. Many of these original features remain in place today and offer insight into how justice was conducted in that period.