Tuncheng is a town located in Hainan Province, China. It serves as the administrative seat of Tunchang County and is situated along the G224 highway, approximately 80 kilometres from the city of Haikou.
The town is characterized by several botanical gardens that feature various water elements. Additionally, the surrounding Tunchang area is known for its crystal mines. In 1992, the population of Tuncheng was recorded at 14,974 people residing across 78 villages.