Mingde Dam () is a rockfill dam across the Laotianliao River in central Touwu Township, Miaoli County, Taiwan. The Mingde Reservoir ( Míngdé Shuǐkù) behind the dam serves mainly for irrigation and municipal water supply for Miaoli City. The dam consists of a main embankment high and long, holding back a reservoir with a capacity of 17.1 million cubic metres (14,350 acre feet). The dam and reservoir control runoff from a catchment area of . A spillway located to the north of the main dam consists of a six-bay gated overflow section, with a release capacity of .
