Kligrok was an early Emperor of the Klingon Empire, noted for his great conquests, and his devotion to the teachings of Kahless the Unforgettable.

Kligrok decreed that any Klingon couple who engaged in sexual relations were automatically mated, in reaction to the numerous feuds among the noble houses, many of which stemmed from illicit affairs. His decrees were later codified by Emperor Kahrl, and the obligation to take an oath following sexual relations remained a point of honor into the 24th century. (KE novel: A Burning House)