Seyom was a star system located in the Alpha Quadrant, near the border of the Cardassian Union. This system had at least six planets, including the desert world Seyom VI.

The planetary approach to the sixth planet was the site of an attack on a passenger ship carrying Gul Skrain Dukat and Major Kira Nerys in 2371, and a later confrontation between the rogue forces of the madman Gul Shyak and a rescue party consisting of Chief Miles O'Brien and Constable Odo aboard a confiscated pirate cruiser. (DS9 comic: "Turn of the Tide")

Due to Shyak's choice of Seyom as a base for rogue operations, this is probably not located in the borders of the Cardassian Union proper.


  • Seyom primary:
    • Seyom I
    • Seyom II
    • Seyom III
    • Seyom IV
    • Seyom V
    • Seyom VI

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