The Dongyuan Wetland () is a wetland in Mudan Township, Pingtung County, Taiwan.
The wetland area used to be a rice farmland. After the construction of Mudan Dam in 1995, the area was submerged by the reservoir the dam created and the land evolved into wetland.
The wetland spans over an area of 1.12 km<sup>2</sup> and is a conservation area.