Torrens Island is a locality in the Australian state of South Australia located in the Adelaide metropolitan area within the estuary of the Port River about 16 kilometres (9.9 mi) north-west of the Adelaide city centre.
Its boundaries which were created in August 2009 include “the whole of the geographical feature of Torrens Island” and parts of the following water bodies that adjoin the shoreline of the ‘geographic feature’ - the Port River to the west, the Angas Inlet to the south and the Barker Inlet to the east.
As of 2014, the majority of the land within the locality is zoned as the “MOSS (Conservation) Zone in order to conserve land as part of the Metropolitan Open Space System (MOSS) whose purpose is to define and link “public and privately owned land of an open or natural character in and around metropolitan Adelaide.” The Torrens Island Conservation Park covers most of the land conserved in respect to MOSS. Also, the land associated with both the Torrens Island Power Station and the Torrens Island Quarantine Station is zoned to manage it for the “public purpose” in respect to power generation and the conservation of heritage.
The former Torrens Island Quarantine Station has been listed on the South Australian Heritage Register since 21 October 1993.
Torrens Island is located within the federal division of Port Adelaide and the state electoral district of Port Adelaide Since at least 2009, Torrens Island has not been located within a local government area.