Dingcheng (Chinese: 定城; pinyin: Dìngchéng) is a town and the county seat of Ding'an, in the northeast of Hainan Province, China.

[2] Around 2015, a newly developed part of Dingcheng is emerging to the southeast, extending to the east side of G98 Hainan Ring Expressway.

The west end of the town contains many decades-old buildings and other structures, including a tunnel to the river, where a port once existed.

Taling's centre has been developed with numerous high-rise apartment buildings, many of which have been purchased or rented by mainland people who occupy the properties during the winter months.

However, because it is situated directly to the south of the Nandu River, fewer roads access the city from the north.