Kʼan Ahk II,[1] also known as Ruler B was the second ruler of that Mayan city in Guatemala.

He was a successor of Ruler A.

[2] Nothing is known of this king except that one of his lieutenants, a yajawte' ("lord of the tree"), was captured by Yaxchilan ruler Bird Jaguar II, probably in AD 478, as recorded at Yaxchilan.

His successor was Turtle Tooth.

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