Gawler is the oldest country town on the Australian mainland in the state of South Australia. It was named after the second Governor of the colony of South Australia, George Gawler. It is about 40–44 km (25–27 mi) north of the state capital, Adelaide, and is close to the major wine producing district of the Barossa Valley. Topographically, Gawler lies at the confluence of two tributaries of the Gawler River, the North and South Para rivers, where they emerge from a range of low hills.

Lieutenant-Colonel George Gawler, KH, was the second Governor of South Australia, at the same time serving as Resident Commissioner, from 17 October 1838 until 15 May 1841.