The Sunbury railway line is a suburban electric railway in Melbourne, Australia. It has 15 stations, in Myki ticketing Zones 1 and 2. It is the electrified section of the Bendigo railway within metropolitan Melbourne. Prior to the line extension to Sunbury, the line was known as the Sydenham railway line, and prior to the extension of electrification to Sydenham, the line was known as the St Albans railway line.