K'inich Yat Ahk II (Mayan pronunciation: [kʼinitʃ jat akh]), also known as Ruler 7, was the final ajaw of Piedras Negras, an ancient Maya settlement in Guatemala. He ruled during the Late Classic Period, from 781 to roughly 808 AD. Possibly a descendant of Itzam K'an Ahk II, K'inich Yat Ahk II ascended the throne upon the death of his brother, the sixth ajaw of the site, Ha' K'in Xook. While K'inich Yat Ahk II presided over the destruction of the rival Maya site Pomona, his reign seems to have ended with the capture of Piedras Negras by K'inich Tatbu Skull IV of Yaxchilan. Itzam K'an Ahk II left behind several monuments, including stelae at Piedras Negras, a stone seat known as Throne 1 which records either the death or abdication of Ha' K'in Xook, and Panel 3 which recounts the exploits of Itzam K'an Ahk II.