Mingde Dam (Chinese: 明德水壩; pinyin: Míngdé Shuǐbà) is a rockfill dam across the Laotianliao River in central Touwu Township, Miaoli County, Taiwan.

The Mingde Reservoir (明德水庫 Míngdé Shuǐkù) behind the dam serves mainly for irrigation and municipal water supply for Miaoli City.

The dam and reservoir control runoff from a catchment area of 61.08 square kilometres (23.58 sq mi).

A spillway located to the north of the main dam consists of a six-bay gated overflow section, with a release capacity of 1,200 cubic metres per second (42,000 cu ft/s).

This article about a dam or floodgate in Taiwan is a stub.