Barnstaple railway station is the northern terminus of the Tarka Line and serves the town of Barnstaple, Devon. It is 39 miles 75 chains (64.3 km) from Exeter Central and 211.25 miles (339.97 km) from London Waterloo. It is managed by Great Western Railway, which also operates the passenger service.

The Tarka Line, also known as the North Devon Line, is a local railway line in Devon, England, linking the city of Exeter with the town of Barnstaple via a number of local villages, operated by Great Western Railway (GWR). The line opened in 1851 from Exeter to Crediton and in 1854 the line was completed through to Barnstaple. The line was taken over by the London and South Western Railway (LSWR) in 1865 and later became part of the Southern Railway and then British Rail. In 2001, following privatisation, Wessex Trains introduced the name Tarka Line after the eponymous character in Henry Williamson's book Tarka the Otter. The line was transferred to First Great Western in 2006.