Big Heath Conservation Park (formerly the Big Heath National Park) is a protected area in the Australian state of South Australia located in the gazetted locality of Spence about 20 kilometres (12 mi) south-west of Naracoorte in the state's Limestone Coast region. As of 1994, the conservation park was reported as supporting a “diversity of vegetation types which correlate with the topography and soils of the area” as follows: As of 1994, visitor use was reported as being “low” and was mainly concerned with “nature study by the local and Naracoorte communities.”