Archon was a hereditary noble title owned by the rulers of the old nations and city-states on Alfheim, the members of the Council of Archons, and later by all members of the Imperial Parliament. Originally a title strictly for aristocrats among the Star Elves, it was later granted to hereditary nobles among the Asguardian Dwarfs in Parliament and aliens appointed to lifetime Parliament seats by the ruling Imperial Sovereign.

During the time of the Star Imperium and to a lesser extent under the United Planets, colonies on new worlds established predominantly by Star Elves had hereditary or democratically elected leaders using the title of Archon.