Nantou Ancient City Museum, Ancient city museum in Nanshan District, China.

The Nantou Ancient City Museum occupies the two-story building of the former Bao'an County government, established in 1950, outside the south gate of Nantou Ancient City. Its three halls display artifacts and photographs from the Neolithic Xiantouling site, the Shang dynasty Wubeiling tombs, the Battle of Tuen Mun, and the Japanese invasion, covering the period from the Neolithic to modern times.

The museum site marks where Nantou served as the administrative center of Xin'an County and city walls were built during the Ming Dynasty. This fortified complex shaped the region's strategic importance for centuries.

The exhibition halls display stone objects and historical maps showing how people lived across different periods of the city's past. Visitors can observe the daily routines and practices that shaped life here over the centuries.

The museum stands just outside the south gate of Nantou Ancient City, at Nantou Jiaochang No. 2, and opens daily from 09:30 to 17:30 except on public holidays. Admission is free. It shares its opening with six other protected sites in the old city, including the city wall and the Wen Tianxiang ancestral hall, so the visit can be combined on foot.

The museum building itself is the former Bao'an County government house, erected in 1950; the museum project was approved on 8 November 2002 and the museum opened in September 2004. It shares its grounds with six protected sites, including the Nantou city wall and the Xin Guogong Wen family shrine.