Astro-Icelandic philosophy, or Icelandic Astronism, refers to the presence of Astronism in Iceland under management and philosophical jurisdiction of The Institution of The Philosophy of Millettism for Iceland, a national subsidiary for the worldwide Astronist Institution. The Institution of the Philosophy of Millettism for Iceland oversees the construction and maintenance of observatories and planetariums throughout its jurisdiction. Iceland is split into eight regions and is set to hold one Grand Observatory in the capital city of Reykjavik, which will be the only observatory in the country. 

This national branch of The Institution of The Philosophy of Millettism manages the official representation and depiction of Astronism throughout this territory, including efforts to protect the identity of the philosophy with the intention of further disseminating it throughout the territory. It is The Institution alone that is granted the status of proprietor to the philosophy in this territory as any other organisations or institutions proclaiming such a role are deemed as unauthorised proprietors and are therefore considered as part of the anti-Institutionist movement. 

History of Astronism in Iceland

Astronism is currently not recognised as a religion in Iceland, but despite this, Astronist religious liberties are respected as part of Icelandic religious freedom laws. In its 2019 Demographics of Astronism report, the Astronist Institution claimed 2,650 Icelanders were Astronists out of a total population of 339,000. Very few Astronist materials have been translated into the Icelandic language which presents a barrier for the further spread of Astronism in the Nordic country.