The Shen'ao line () is a 4.6 km long, single-track railway branch line of the Taiwan Railway. It runs through Ruifang in New Taipei and Zhongzheng in Keelung.
The railroad was originally built on 25 August 1967. The line was initially built to transport coal but later added a passenger service, though passenger service was suspended 1989. It then opened again in 2016, but the extending line from Badouzi Station () onwards was disused.
All trains have through service to the Yilan line.