The Xindian River (Chinese: 新店溪; pinyin: xīn diàn xī) is a river in northern Taiwan. It flows through New Taipei and the capital Taipei for 82 km. The Feitsui Dam spans the river southeast of Taipei.

The Xindian River is one of the three major tributaries into the Tamsui River. Its main tributary is the Beishi River which originates in Shuangxi District, New Taipei City at an elevation of 700 meters. It flows west past Xindian before merging with the Nanshi River; it is at this point that it can be called "Xindian River". It then turns north and merges with the Chingmei River, before finally merging with the Dahan River and feeding into the Tamsui River.

The river is one of the main sources for drinking water in Taipei City. According to the Taipei City Running Water Center, over 4 million Taipei residents obtain 97% of their drinking water from the river. The first bridge over the river was constructed in 1937 and at 200 meters long connected the areas of Zhonghe and Xindian. Today, there are 22 bridges that span the river.