The Unitarian Church in Charleston, home to a Unitarian Universalist congregation, is an historic church located at 4 Archdale Street in Charleston, South Carolina. It is the oldest Unitarian church in the South and the second oldest church building on the peninsula of Charleston. The church has received Welcoming Congregation status from the Unitarian Universalist Association as well as Green Sanctuary certification. It is known in Charleston for its social justice activities.