The Shen'ao line (Chinese: 深澳線; pinyin: Shēn'ào Xiàn; Pe̍h-ōe-jī: Chhim-ò Soàⁿ) is a 4.6 km long, single-track[1] railway branch line of the Taiwan Railways Administration.

It runs through Ruifang in New Taipei and Zhongzheng in Keelung.

The line was initially built to transport coal but later added a passenger service, though passenger service was suspended 1989.

[2] It then opened again in 2016, but the extending line from Badouzi Station (Chinese: 八斗子) onwards was disused.

[2] All trains have through service to the Yilan line.