Delaware State Museum Buildings, also known as Old Presbyterian Church Complex, is a historic museum complex located at Dover, Kent County, Delaware. The complex consists of four buildings. They are the Old Presbyterian Church, brick chapel (1880), brick gas plant office building, and the Georgian-style Eldridge Reeves Johnson Memorial Building. The Old Presbyterian Church was built in 1790, and is a two-story, three bay square brick early Federal style meeting house. Buried in the adjacent cemetery are a number of prominent Delawareans including John M. Clayton (1796-1856) and John Haslet (c. 1727-1777). The Eldridge Reeves Johnson Memorial Building houses the Johnson Victrola Museum.
It was added to the National Register of Historic Places in 1972.