Yucca baileyi is a plant in the family Asparagaceae. It is native to Utah, Arizona, New Mexico and Colorado but has been cultivated elsewhere. Much of its native range is within the boundaries of the Navajo (Diné) Reservation, hence the common name "Navajo yucca." The Navajo people make extensive use of yucca fibers to make a wide assortment of useful and ceremonial items. They also use the roots as soap.