Marquis Huan of Cai (蔡桓侯), born Jī Fēngrén (姫封人), was the twelve ruler of the State of Cai from 715 BC to 695 BC. He was the only known son of Marquis Xuan of Cai (蔡宣侯), his predecessor. His reign was a period of 20 years. He was succeeded by his son.