The Norramby Branch Line is a branch that runs to Norramby. It used to be part of the now-closed Sodor and Mainland Railway. Not much is known about the line. It is currently run by Eagle, Molly, Neville and Dennis.

From either Crovan's Gate or Vicarstown, the line travels to the town of Ballahoo. From here, the branch travels to the terminus of Norramby.

A Joint BR/NWR Service from Barrow serves the line (hourly, half-hourly at peak times). Not much is known about freight services.