Cape Banks Lighthouse is a lighthouse in the Australian state of South Australia located in the state's south-east on an unnamed headland in the gazetted locality of Carpenter Rocks about 2.5 kilometres (1.6 mi) north-west of the locality's town centre.

The proposal with a budget of £3,770 involved the reuse of the “catoptric apparatus now at Cape Northumberland lighthouse.“ The lighthouse was described as being about 9.1 metres (30 ft) high with the light's focal plane being about 18 metres (60 ft) about the high water mark and that it would be visible as far away as 16–19 kilometres (10–12 mi).

[3] On 27 July 1882, Goss & Lambert of Mount Gambier was contracted for an amount of “about £3,000“ to build the “lighthouse, a store, and two lightkeepers' cottages.”[14] The light was first used on 1 January 1883.

Its significance is reported as follows:[12]The Cape Banks Lighthouse is important in the maritime history of South Australia and the establishment of navigation aids during the late 19th century.

[6] The cadastral unit of land which includes the lighthouse was added to the Canunda National Park on 14 August 1997.