The IKS Kaza was a Klingon Imperial Defense Force starship in service in the 23rd century.

In 2275, Kaza was the flagship of a small eight-ship group that attempted to ambush the inversion drive test vessel USS Enterprise. When Kaza's fleet set upon the Enterprise near Starbase 18, Kaza initiated contact, ordering the ship to surrender. When battle began, Enterprise used extreme evasive maneuvers that caused another member of Kaza's fleet, IKS Enekti, to succumb to structural stress and be destroyed. Kaza's captain (see: unnamed Klingons) contacted Enterprise and she advised them to kill their helmsman in order to have him go first and alert the Black Fleet that their crew would soon follow. Shortly thereafter, Enterprise tricked Kaza into engaging high-warp speed on a direct course for the star 109 Piscium, dooming the vessel. (TOS novel: The Wounded Sky)