Nuun Ujol Chaak

Nuun Ujol Chaak
Ajaw of Tikal
Nuun Ujol Chaak's glyph.
Reign	before 657-c.679
Predecessor	24th Ruler
Successor	Jasaw Chan K'awiil I
Born	before 657
Died	c.679
Issue	Jasaw Chan K'awiil I
Father	K'inich Muwaan Jol II?
Mother	Lady Jaguar Seat
Religion	Maya religion

Nuun Ujol Chaak also known as Shield Skull and Nun Bak Chak (before 657-c.679) was an ajaw of the Maya city of Tikal. He took the throne before 657 and reigning probably until his death.