Here’s a list of countries and territories in Oceania based on the United Nations geoscheme.

Australia and New Zealand:

• Australia
• New Zealand
• Norfolk Island

Melanesia:

• Fiji
• New Caledonia
• Papua New Guinea
• Solomon Islands
• Vanuatu

Micronesia:

• Guam
• Kiribati
• Marshall Islands
• Micronesia (Federated States of)
• Nauru
• Northern Mariana Islands
• Palau

Polynesia:

• American Samoa
• Cook Islands
• French Polynesia
• Niue
• Pitcairn
• Samoa
• Tokelau
• Tonga
• Tuvalu
• Wallis and Futuna Islands