K'lavut was a male Klingon starship captain in the Klingon Defense Force in the 23rd century.

In 2279, as commander of the IKS Vo'taq, K'lavut launched an unprovoked attack on the USS Gagarin, in orbit of Nuvidula IV. After boarding the Gagarin and attempting to take command, her commander, Gralev, initiated her ship's self-destruct sequence. K'lavut then had the Vo'taq use its cargo transporters to seize twenty-eight of the Gagarin's fifty person crew and return them to Klingon space. (TOS novel: In the Name of Honor)