Dawanshan Dao, or Dawanshan Island, is an island in the southwest Wanshan Archipelago, offshore of Zhuhai, Guangdong in China. Xiaowanshan Dao is located in the west of Dawanshan Dao. Dawanshan Dao has an area of 8.1 km2 and a population of about 3,000. The seat of Wanshan Town (万山镇) of Zhuhai is located on the island.