Weymouth railway station is the main railway station serving the town of Weymouth, Dorset, England. The station is the southern terminus of both the South West Main Line, 142 miles 64 chains (229.8 km) down the line from London Waterloo, and the Heart of Wessex Line from Bristol Temple Meads and Gloucester, 168 miles 63 chains (271.6 km) from London Paddington.

Weymouth is a sea-side town and civil parish in the Dorset district, in the ceremonial county of Dorset, on the English Channel coast of England. Situated on a sheltered bay at the mouth of the River Wey, 11 km (7 mi) south of the county town of Dorchester, Weymouth had a population of 53,427 in 2021. It is the third-largest settlement in Dorset after Bournemouth and Poole. The greater Weymouth urban area has a population of 72,802.