Kʼakʼ Chan Yopaat was the eleventh dynastic ruler at Copán.

He was crowned as king in AD 578, 24 days after the death of Tzi-Bʼalam.

The two surviving stelae of Kʼakʼ Chan Yopaat contain long hard-to-decipher hieroglyphic texts and are the oldest monuments at the site to survive without being either broken or buried.

He had a long reign, ruling at Copán for 49 years, and he died on 5 February 628.

His name is recorded on four stelae erected by his successors, one of which describes a rite performed with relics from his tomb in AD 730, almost a hundred years after his death.