Poltalloch is a locality in the Australian state of South Australia located on land between the water bodies of Lake Alexandrina and Lake Albert about 87 kilometres (54 miles) south-east of the state capital of Adelaide.

[3][1] Poltalloch began as a private sub-division in the cadastral unit of the Hundred of Malcolm.

Its boundaries were created in August 2000 in respect to “the long established name.”[1] Poltalloch is bounded by Lake Alexandrina to the north, by Lake Albert to the south-west and by the Princes Highway to the south-east.

[1] A road named the Poltalloch Road runs between the Princes Highway in the north along the coastline with Lake Alexandrina to Point Malcolm in the south-west where a ferry service operates to provide access to Narrung.

[8] The locality includes the following places listed on the South Australian Heritage Register - Point Malcolm Lighthouse, Poltalloch Homestead and Poltalloch Station Complex.