Waterloo is a settlement in South Australia, located just off the Barrier Highway between Manoora and Black Springs, approximately 121 kilometres (75 mi) north-east of the state capital of Adelaide.

[8] The locality is the birthplace of Tom Kruse, the Australian outback mailman who worked on the Birdsville Track in the border area between South Australia and Queensland.

[9] Although the township of Waterloo never thrived, it became the service centre for a large rural community, providing such facilities as a school, churches, and shopping.

In 1918 as part of the Act of Parliament to change German place names, Carlsruhe was renamed Kunden.

[10] Today, the locality is now part of the greater Waterloo postcode area and all that remains of its original namesake is the church, cemetery and Carlsruhe Road.