Lady Kʼabʼal Xook [kʼaɓal ʃoːk] or Lady Xoc was a Maya Queen consort of Yaxchilan and is considered to have been one of the most powerful and prominent women in Maya civilization. She was the principal wife and aunt of King Itzamnaaj Bʼalam II, who ruled the prominent kingdom of Yaxchilan from 681 to 742. She is believed by many to have been the sister of Lady Pacal.