None. The only land that the Antarctic Circle crosses is on the continent of Antarctica.
There are no cities, states, provinces, or countries on that continent.
There is no Atlantic Circle. The Antarctic Circle passes through no countries. See the related link for a map of the Antarctic Circle.
None.
The Antarctic Circle passes through Antarctica, which is a continent with no countries.
None.
None.
There are no countries on Antarctica and no permanent population, indigenous or otherwise.
None.
None.
None. Any land that the Antarctic Circle crosses is part of the continent of Antarctica, which is not carved up into countries.
None. No states or countries either.
There are no countries in Antarctica. Antarctica is governed by the Antarctic Treaty System, which establishes the continent as a scientific preserve and prohibits military activities, mineral mining, and nuclear testing.
The land on the Arctic Circle is divided among eight countries: Norway, Sweden, Finland, Russia, the United States (Alaska), Canada, Denmark (Greenland), and Iceland (where it passes through the small offshore island of Grímsey).