The South Devon and Tavistock Railway was a broad gauge railway linking Plymouth with Tavistock in Devon, England. It opened in 1859, was extended by the Launceston and South Devon Railway to Launceston, Cornwall, in 1865, and was closed in 1962.
1876 London and South Western Railway opens from Okehampton to Lydford, from where they reached Plymouth over the South Devon and Tavistock line, mixed gauge being laid for the purpose