The House of Antaak was a Klingon Great House. The members of this house were traditionally in the warrior caste. One notable exception to this was the Klingon doctor Antaak, who was disowned by his father for wanting to practice medicine. (ENT: "Divergence")

Klingon Great Houses
Antaak • D'Ghor • Duras • Grilka • Konjah • Kor • Korath • Martok • Mo'Kai • Mogh • Noggra