Dosa II was the second planet of the Dosa system in the Gamma Quadrant. It was a Class M world.

It was the homeworld of the Dosi race (Last Unicorn RPG module: Star Trek: Deep Space Nine Core Game Book). It had an estimated population of 1.5 billion and was controlled by the Dosi Confederation, with the capital city of Relxer-D (ST reference: Star Charts).

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