Empire of Atlantium

The Empire of Atlantium is a micronation and secular, pluralist progressive lobby group based in New South Wales, Australia.

Micronations: The Lonely Planet Guide to Home-Made Nations describes Atlantium as "a refreshing antidote to the reactionary self-aggrandisement of so many micronations", and "an extremely sophisticated nation-state experiment, as well as an entirely serious claimant to legitimate statehood". The book's entry on Atlantium notes its espousal of "progressive, liberal policies" and characterizes it as a "secular humanist utopia".

Among the causes Atlantium supports are the right to unrestricted international freedom of movement, the right to abortion, the right to assisted suicide and decimal calendar reform.