Gillingham railway station is in Gillingham, Dorset, England. It is on the West of England Main Line, 105 miles 23 chains (169.4 km) down the line from London Waterloo. Today it is managed by South Western Railway. The main offices, designed by Sir William Tite, stand on the north side of the line.

The West of England line is a British railway line from Basingstoke, Hampshire, to Exeter St Davids in Devon, England. Passenger services run between London Waterloo station and Exeter; the line intersects with the Wessex Main Line at Salisbury. Despite its historic title, it is not today's principal route from London to the West of England: Exeter and everywhere further west are reached more quickly from London Paddington via the Reading–Taunton line.