The Principality of New Nassau is a small nation consisting of 3 star systems in the Amptharha-A galaxy. It is a territory of the Kingdom of Herpa, but it has it's own government and military. It is led by the Prince of New Nassau, who has his power granted to him by the King of Herpa. The three star systems that make up this nation include:
- The Orainen star system, home to the capital planet of Nassau,
- The Redis star system, home to the planets Elizabeth and Elijah,
- and The Duchus system, home to the planet Vaursauis.
The National Anthem of this nation is an instrumental version of Heil dir im Seigerkranz, the same anthem as the Kingdom of Herpa.