Unas' most immediate legacy is his funerary cult, which continued at least until the end of the Old Kingdom. This cult is attested by the tombs at Saqqara of seven priests responsible for the religious duties to be performed in the funerary complex. Three of these tombs date to the early Sixth Dynasty in the time following the death of Pepi I. Three more tombs date to the reign of Pepi II and the last one dates to the very end of the Old Kingdom (c. 2180 BC). The priests of the cult of Unas adopted basilophorous names, incorporating that of the king, possibly upon taking office.