Sanxia District (traditional Chinese: 三峽區; simplified Chinese: 三峡区; Hanyu Pinyin: Sānxiá Qū; Tongyong Pinyin: Sansiá Cyu; Pe̍h-ōe-jī: Sam-kiap-khu) is a district in the southwestern part of New Taipei, Taiwan.

The old name of Sanxia, Sa-kak-eng (Chinese: 三角湧; pinyin: Sānjiǎoyǒng; Pe̍h-ōe-jī: Saⁿ-kak-éng; lit.

In 1920, Taiwan's Japanese government administratively designated the town as Sankyō (Japanese: 三峽, lit.

Three Gorges), Kaizan District, Taihoku Prefecture.

After the first coffee plants on Taiwan were imported by the British to Tainan in 1884, the first significant small-scale cultivation took place in Sanxia District.