The buntot ng pagi or stingray tail, is a Filipino martial arts weapon which is also believed to ward off evil spirits and demons.

Though less lethal than other weapons, the buntot ng pagi is known for causing excruciating pain and wounds that would fester.

It is believed that remnants of a poison produced by the stingray would cause the wound delivered by the buntot ng pagi to linger and get infected.