Astro-Lithuanian philosophy, or Lithuanian Astronism, refers to the presence of Astronism in the Republic of Lithuania under management and philosophical jurisdiction of The Institution of The Philosophy of Millettism for the Republic of Lithuania, a national subsidiary for the worldwide Astronist Institution. The Institution of the Philosophy of Millettism for the Republic of Lithuania oversees the construction and maintenance of observatories and planetariums throughout its jurisdiction. 

Lithuania is split into ten counties and is set to hold one Grand Observatory in the capital city of Vilnius. 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 Lithuania

As of November 2019, Astronists in Lithuania number around 700 people yet Astronism is not recognised as a religion by the Lithuanian government. In addition to this, no Astronist materials have been accurately translated into Lithuanian as of late 2019.