For other uses, see Cult.

The Cult of Kahless was a Klingon group that existed within the Klingon Empire. (TOS novel: One Small Step)

Jadzia Dax remarked, after the possibility of a Dominion-Klingon Alliance, that all the Klingons she met were honorable warriors until the Cult of Kahless arose a few decades ago. (DS9 novel: Vengeance)