Bath Spa railway station is the principal station serving the city of Bath in Somerset, England. It is on the Great Western Main Line, 106 miles 71 chains down the line from the zero point at London Paddington between Chippenham to the east and Oldfield Park to the west. It is the busiest station in Somerset, and the second busiest station in South West England after Bristol Temple Meads.

The Great Western Main Line (GWML) is a main line railway in England that runs westwards from London Paddington to Bristol Temple Meads. It connects to other main lines such as those from Reading to Penzance and Swindon to Swansea. The GWML is presently a part of the national rail system managed by Network Rail while the majority of passenger services upon it are provided by the current Great Western Railway franchise.