The Capt. Nathaniel B. Palmer House is a historic house museum in Stonington, Connecticut, built in 1852–54. The house is a transitional style between the Greek revival and the Victorian Italianate. It was built for Nathaniel Brown Palmer (1799–1877), who was a seal hunter, a pioneering Antarctic explorer, and a major designer of clipper ships. The house was declared a National Historic Landmark in 1996. Threatened with demolition, it was acquired by the Stonington Historical Society in 1994, which operates it as a museum devoted to Palmer.