Panlongcheng (simplified Chinese: 盘龙城; traditional Chinese: 盤龍城; pinyin: Pánlóngchéng) is an archaeological site associated with the Erligang culture. The site is located just north of the Yangtze river in Hubei, China. Panlongcheng is the largest excavated Erligang site (1 km² at its peak), showing the southernmost reach of the Erligang culture at its peak.
The site at Panlongcheng was sparsely inhabited during the Erlitou period,consisting mainly of several small settlements and occupying an area of around 200,000 m². During the early Erligang period, the site suddenly grew rapidly, reaching an area of around 1 km2 (0.39 sq mi) with a walled center of 75,000 m². Panlongcheng may have been an Erligang outpost used to control regional resources, such as copper mines.
The construction and bronze casting techniques at Panlongcheng are identical with the techniques employed at Erligang and Zhengzhou; however, the pottery style is different. The style of Erligang elite burials is almost an exact replica of the burials at Zhengzhou; however, later layers show that the Erligang style disappeared during the later stages of the Erligang culture. The site declined until it was abandoned altogether at the end of the Erligang culture. Panlongcheng's decline may have been affected in part by the growth of the site at Wucheng.