The Limestone Coast is a large appellation covering the broad sweep of coast to the south of Adelaide and rounding to the east where it meets the border with Victoria. The most prominent sub-regions include Coonawarra and its neighbors. Due to its close proximity to the Great Southern Ocean it is most broadly the coolest climate in South Australia.

Windswept, sparsely populated, and undeveloped, many of the larger companies have developed significant plantings in the broader region to supplement their hot climate plantings in the production of regional blends. So much so, that the area is now responsible for one-third of South Australia's wine volume, though much of that is blended and labeled with the broader South or Southeastern Australia designations. (Wine/Appellations)