Hallett Cove is a coastal suburb of Adelaide, South Australia located in the City of Marion 21 kilometres (13 miles) south of the Adelaide city centre. It has a population of more than 12,000 people. Adjoining suburbs are Marino to the north, Trott Park and Sheidow Park to the east and Lonsdale to the south.

Hallett Cove railway station is on top of the cliffs to the north of the beach, and services the greater Hallett Cove area. Originally the line ran inland from there to Reynella and ultimately to Willunga but the section from Hallett Cove onwards was closed in the 1960s. The Coast to Vines rail trail is a cycle and pedestrian path that now follows the old line. A new railway extension was built south along the coast to Noarlunga; Hallett Cove Beach is the first station on this line. Both stations underwent a refurbishment in 2011, giving them a more modern look.