None. Nation states claim territory in Antarctica, but the claims are invalid under the Antarctic Treaty.
There are no territories in Antarctica.
One hundred percent of Antarctica is un-owned. Several nations have made claims on the continent, none of which are recognized as valid under the Antarctic Treaty.
Antarctica is a continent under the governance of the Antarctic Treaty. There are zero territories on the continent.
Antarctica, all the other continets have partial ownership of Antarctica
Australia does not own Antarctica: it is owned by no country.
One hundred percent of Antarctica is land. The continent is about 98% covered by ice.
Bare land in Antarctica is about two percent.
Zero.
Antarctica is owned in sections by various countries, being the UK, New Zealand, France, Norway [owns two territories], Australia, Chile, and Argentina. Nazi Germany also owns a slice of Antarctica, although only Germany recognises this territory [funnily enough]
One hundred percent of Antarctica is, and only about two percent of the continent is not covered by its ice sheet.
It has 12 countries working there, but I do not know it is "owned" by any of them.
97% of Antarctica is covered by ice!!!