Papua New Guinea is part of the continent of Oceania. Although formerly considered as non-continental, Oceania is now widely accepted by geographical experts as the planet's smallest continent.
Papua New Guinea is situated in the southwestern region of the Pacific Ocean, bordering Indonesia to the east. It shares its coastal territories with Australia, Micronesia, New Caledonia and the Solomon Islands. The Papua New Guinea mainland forms the eastern section of the New Guinea island, along with New Ireland, Bougainville, New Britain and Manus Island. Some of the other countries that comprise Oceania include New Zealand, Australia, Fiji, Vanuatu, Tuvalu, Micronesia, Palau, Kiribati and Nauru.