The Eyttyrmin Pirates, alternatively referred to as the Eyttyrmin Batiiv, constituted a pirate organization that arose soon after the establishment of the Galactic Empire. Their operations proved quite fruitful for a period, but their activities were brought to an end by the Empire during the Battle of Khuiumin.
Fewer than three hundred individuals from the group's original eight thousand members remained alive following the conflict. These survivors, who became recognized as the Khuiumin Survivors, ultimately took residence on the planet Courkrus, where they occasionally collaborated with Leonia Tavira's Invids.
In the 1997 sourcebook titled Pirates & Privateers, a typographical error led to the pirate group's name being written as "Ettyrmin Batiiv."