Surjak was a Cardassian in the 24th century.
Surjak had been an enemy of Enabran Tain and Tain believed that Surjak could not be trusted. On Tain's deathbed in 2373, Elim Garak assured him that Surjak had been "taken care of". (DS9: "In Purgatory's Shadow")
This character was only mentioned in dialogue.