Winchester railway station is a railway station in Winchester in the county of Hampshire, England. It is on the South West Main Line and was known as Winchester City from 1949–67 to distinguish it from Winchester (Chesil) station. It is 66 miles 39 chains (107.0 km) down the line from London Waterloo.

The South West Main Line (SWML) is a 143-mile major railway line between Waterloo station in central London and Weymouth on the south coast of England. A predominantly passenger line, it serves many commuter areas including south western suburbs of London and the conurbations based on Southampton and Bournemouth. It runs through the counties of Surrey, Hampshire and Dorset. It forms the core of the network built by the London and South Western Railway, today mostly operated by South Western Railway.