Renmark is a town in South Australia's rural Riverland area, and is located 254 km (157.83 mi) northeast of Adelaide, on the banks of the River Murray. The Sturt Highway between Adelaide and Sydney runs through the town; Renmark is the last major town encountered in South Australia when driving this route. It is a few kilometres west of the SA–Victoria and SA–NSW borders. It is 31 m (101.71 ft) above sea level.

The Riverland is a region of South Australia. It covers an area of 9,386 square kilometres (3,624 sq mi) along the River Murray from where it flows into South Australia from New South Wales and Victoria downstream to Blanchetown. The major town centres are Renmark, Berri, Loxton, Waikerie, Barmera and Monash, and many minor townships. The population is approximately 35,000 people.