List of military units based in or affiliated with the South Island
== Royal New Zealand Navy bases and ships of the South Island == HMNZS Canterbury (L421) - Multi Role Vessel: 2007- HMNZS Hawea (2007) - Protector class inshore patrol vessel: 2007- HMNZS Otago (P148) - Protector Class Ocean Patrol Vessel: 2007- HMNZS Pegasus, RNZNVR Establishment, Christchurch HMNZS Pukaki (2008) - Protector class inshore patrol vessel: 2008- HMNZS Toroa, RNZNVR Establishment, Dunedin === Former Royal New Zealand Navy bases, ships and units of the South Island === HMNZS Canterbury (F421) - Leander-class frigate: 1971–2005 HMNZS Charles Upham (A02) - Military sealift ship: 1995–2000 HMNZS Hautapu (T26) - Castle-class minesweeper: 1943–1947 HMNZS Hawea (F422) - Loch-class frigate: 1948–1957 HMNZS Kiwi (P3554) - Moa class patrol boat: 1984–2007 HMNZS Lyttelton - Examination vessel: 1942–1944 HMNZS Moa (P3553) - Moa class patrol boat: 1984–2007 HMNZS Monowai (F59) - armed merchant cruiser and Landing Ship, Infantry: 1940–1943 HMNZS Monowai (A06) - Hydrographic survey vessel: 1975–1997 HMNZS Otago (F111) - Rothesay-class frigate: 1960–1983 HMNZS Pukaki (F424) - Loch-class frigate: 1948–1966 HMNZS Southland (F104) - Leander-class frigate: 1983–1997 HMNZS Stina - Examination vessel: 1942–1944 HMNZS Tasman - Training vessel: 1944–1946 HMNZS Tasman - Former Naval Base at Lyttelton HMNZS Tuirangi - Examination vessel: 1942–1944 HMNZS Waima (T33) - Castle-class minesweeper: 1943–1946 HMNZS Wairangi - Examination vessel: 1940–1944 3rd Minesweeping Group, Royal New Zealand Navy == Royal New Zealand Air Force bases and units of the South Island == RNZAF Air Movements Harewood, Christchurch RNZAF Base Wigram, Christchurch RNZAF Base Woodbourne RNZAF Command Training School RNZAF Dip Flat, Nelson Lakes District RNZAF General Service Training School RNZAF Museum, Wigram, Christchurch === Former Royal New Zealand Air Force bases and units of the South Island === RNZAF Addington RNZAF Cashmere RNZAF Darfield RNZAF Dillions Point RNZAF Eyreton (Harris Field) RNZAF Hillside, Dunedin RNZAF Lyttelton RNZAF Maronan RNZAF Mayfield RNZAF Milton RNZAF Momona RNZAF Outram RNZAF Station Ashburton RNZAF Station Birdlings Flat RNZAF Station Christchurch Central RNZAF Station Delta RNZAF Station Fairhall RNZAF Station Harwood RNZAF Station Norwood RNZAF Station Nelson RNZAF Station Omaka RNZAF Station Taieri RNZAF Station Te Pirita RNZAF Station Weedons RNZAF Waimakariri No. 1 Electrical and Wireless School No.