The Gawler line, also known as the Gawler Central line, is a suburban commuter railway line in the city of Adelaide, South Australia. The Gawler Line is the most frequent and heavily patronised line in the Adelaide rail network.

The rail network in Adelaide, South Australia, consists of four lines and 89 stations, totalling 132 km (82 mi). It is operated by Keolis Downer under contract from the Government of South Australia, and is part of the citywide Adelaide Metro public transport system.