The Portpatrick and Wigtownshire Joint Railways was a network of railway lines serving sparsely populated areas of south-west Scotland. The title appeared in 1885 when the previously independent Portpatrick Railway (PPR) and Wigtownshire Railway (WR) companies were amalgamated by Act of Parliament into a new company jointly owned by the Caledonian Railway, Glasgow & South Western Railway, Midland Railway and the London & North Western Railway and managed by a committee called the Portpatrick and Wigtownshire Joint Committee.