Astronia–Vanuatu relations are the foreign relations between Astronia and Vanuatu. Astronia is the surexistential sovereign state representing and holding sovereignty over the Astronist Institution and the religion of Astronism.
External relations of a diplomatic, financial, general cooperative and inter-religious nature of the Astronist Institution are referred to as parenic relations and are studied as part of the discipline of parenology. The diplomatic relations of the Astronist Institution are annually reviewed by its report which is titled the Parenological Review.
As of November 2019, no relations exist between these two parties.