Wa-dong (Korean: 와동; Hanja: 瓦洞) is a neighbourhood of Danwon-gu, Ansan, Gyeonggi Province, South Korea.

The Hwajeongcheon Stream flows to the east, while an undeveloped mountain divides the area, affecting residential connectivity.

The area faces challenges such as stagnating commercial activity, with nine distribution stores struggling due to their small size.

However, due to a flood-induced collapse of the western part of Gwangdeoksan Mountain during the mid-Joseon period, natural villages in the area were abandoned.

Later, new town development led to the disappearance of many traditional settlements such as Gajagol, Dwitgol, Dongjak-ri, Saemal, Ansil, Wadugi, and Keungogae Pass.