Oceania
- American Samoa (unorganized, unincorporated territory of the United States)
- Governor - Peter Tali Coleman, Governor of American Samoa (1978–1985)
- Australia
- Monarch - Elizabeth II, Queen of Australia (1952–present)
- Governor-General - Sir Ninian Stephen, Governor-General of Australia (1982–1989)
- Prime Minister -
- Malcolm Fraser, Prime Minister of Australia (1975–1983)
- Bob Hawke, Prime Minister of Australia (1983–1991)
- Christmas Island (external territory of Australia)
- Administrator -
- William Yates, Administrator of Christmas Island (1982-1983)
- Tom F. Paterson, Administrator of Christmas Island (1983-1986)
- Administrator -
- Cocos (Keeling) Islands (external territory of Australia)
- Administrator -
- Eric Herbert Hanfield, Administrator of Cocos (Keeling) Islands (1982-1983)
- K. Chan, Administrator of Cocos (Keeling) Islands (1983-1985)
- Council Chairman -
- Wahin bin Bynie, Chairman of the Cocos Islands Council (1981-1983)
- Parson bin Yapat, Chairman of the Cocos Islands Council (1983-1993)
- Administrator -
- Norfolk Island (self-governing territory of Australia)
- Administrator - Raymond Edward Trebilco, Administrator of Norfolk Island (1982–1985)
- Chief Minister - David Buffett, Chief Minister of Norfolk Island (1979–1986)
- Fiji
- Monarch - Elizabeth II, Queen of Fiji (1970–1987)
- Governor General -
- Ratu Sir George Cakobau, Governor-General of Fiji (1973–1983)
- Ratu Sir Penaia Ganilau, Governor-General of Fiji (1983–1987)
- Prime Minister - Ratu Sir Kamisese Mara, Prime Minister of Fiji (1967–1987)
- French Polynesia (French overseas territory)
- High Commissioner -
- Paul Noirot-Cosson, High Commissioner of the Republic in French Polynesia (1981–1983)
- Alain Ohrel, High Commissioner of the Republic in French Polynesia (1983–1985)
- High Commissioner -
- Guam (Insular area of the United States)
- Governor -
- Paul McDonald Calvo, Governor of Guam (1979–1983)
- Ricardo Bordallo, Governor of Guam (1983–1987)
- Governor -
- Kiribati
- President -
- Rota Onorio, Chairman of the Council of State of Kiribati (1982–1983)
- Ieremia Tabai, President of Kiribati (1983–1991)
- President -
- Nauru
- President - Hammer DeRoburt, President of Nauru (1978–1986)
- New Caledonia (French overseas territory)
- High Commissioner - Jacques Roynette, High Commissioner of New Caledonia (1982–1984)
- New Zealand
- Monarch - Elizabeth II, Queen of New Zealand (1952–present)
- Governor-General - Sir David Beattie, Governor-General of New Zealand (1980–1985)
- Prime Minister - Robert Muldoon, Prime Minister of New Zealand (1975–1984)
- Cook Islands (Associated state of New Zealand)
- Queen's Representative - Sir Gaven Donne, Queen's Representative of the Cook Islands (1975–1984)
- Prime Minister -
- Tom Davis, Prime Minister of the Cook Islands (1978–1983)
- Geoffrey Henry, Prime Minister of the Cook Islands (1983)
- Tom Davis, Prime Minister of the Cook Islands (1983–1987)
- Niue (associated state of New Zealand)
- Premier - Robert Rex, Premier of Niue (1974–1992)
- Tokelau (dependent territory of New Zealand)
- Administrator - Frank Corner, Administrator of Tokelau (1975–1984)
- Papua New Guinea
- Monarch - Elizabeth II, Queen of Papua New Guinea (1975–present)
- Governor-General -
- Sir Tore Lokoloko, Governor-General of Papua New Guinea (1977–1983)
- Sir Kingsford Dibela, Governor-General of Papua New Guinea (1983–1989)
- Prime Minister - Michael Somare, Prime Minister of Papua New Guinea (1982–1985)
- Pitcairn Islands (British dependent territory)
- Governor - Sir Richard Stratton, Governor of the Pitcairn Islands (1980–1984)
- Magistrate - Ivan Christian, Magistrate of the Pitcairn Islands (1975–1984)
- Solomon Islands
- Monarch - Elizabeth II, Queen of the Solomon Islands (1978–present)
- Governor-General - Sir Baddeley Devesi, Governor-General of the Solomon Islands (1978–1988)
- Prime Minister - Solomon Mamaloni, Prime Minister of the Solomon Islands (1981–1984)
- Tonga
- Monarch - Tāufaʻāhau Tupou IV, King of Tonga (1965–2006)
- Prime Minister - Prince Fatafehi Tu'ipelehake, Prime Minister of Tonga (1965–1991)
- Trust Territory of the Pacific Islands (UN Trust Territory administered by the United States)
- High Commissioner - Janet J. McCoy, High Commissioner of the Trust Territory of the Pacific Islands (1981–1987)
- Northern Mariana Islands (autonomous territory)
- Governor - Pedro Tenorio, Governor of the Northern Mariana Islands (1982–1990)
- Marshall Islands (autonomous territory)
- President - Amata Kabua, President of the Marshall Islands (1979–1996)
- Micronesia (autonomous territory)
- President - Tosiwo Nakayama, President of Micronesia (1979–1987)
- Palau (autonomous territory)
- President - Haruo Remeliik, President of Palau (1981–1985)
- Tuvalu
- Monarch - Elizabeth II, Queen of Tuvalu (1978–present)
- Governor-General - Sir Fiatau Penitala Teo, Governor-General of Tuvalu (1978–1986)
- Prime Minister - Tomasi Puapua, Prime Minister of Tuvalu (1981–1989)
- Vanuatu -
- President - Ati George Sokomanu, President of Vanuatu (1980–1984)
- Prime Minister - Walter Lini, Prime Minister of Vanuatu (1979–1991)
- Wallis and Futuna (French overseas territory)
- Administrator-Superior - Robert Thil, Administrator Superior of Wallis and Futuna (1980–1983)
- President of the Territorial Assembly - Manuele Lisiahi, President of the Territorial Assembly of Wallis and Futuna (1978–1984)
- Western Samoa
- Head of State - Malietoa Tanumafili II, O le Ao o le Malo of Western Samoa (1962–2007)
- Prime Minister - Tofilau Eti Alesana, Prime Minister of Western Samoa (1982–1985)
Read more about this topic: List Of State Leaders In 1983