Unas

Unas
Oenas, Onnos, Unis, Wenis
Black basalt sarcophagus in the funerary chamber of Unas' pyramid
Pharaoh
Reign	duration uncertain; 15 to 30 years in the mid-24th century BC.(Fifth Dynasty)
Predecessor	Djedkare Isesi
Successor	Teti
Royal titulary
Consort	Nebet, Khenut
Children	Hemetre Hemi ♀, Khentkaues ♀, Neferut ♀, Nefertkaues Iku ♀, Sesheshet Idut ♀. Uncertain: Unas-ankh ♂, Iput ♀. Conjectured: Nebkauhor ♂, Shepsespuptah ♂.
Father	possibly Djedkare Isesi
Mother	unknown
Burial	Pyramid of Unas

Unas /ˈjuːnəs/ or Wenis, also spelled Unis (hellenized form Oenas /ˈiːnəs/ or Onnos), was an Ancient Egyptian pharaoh, the ninth and last ruler of the Fifth Dynasty during the Old Kingdom period. Unas reigned for 15 to 30 years in the mid-24th century BC succeeding Djedkare Isesi, who might have been his father. Little is known of Unas' activities during his reign, which was a time of economic decline. Egypt maintained trade relations with the Levantine coast and Nubia, and military action may have taken place in southern Canaan. The growth and decentralization of the administration in conjunction with the lessening of the king's power continued under Unas, ultimately contributing to the collapse of the Old Kingdom some 200 years later.

Unas built a pyramid in Saqqara, the smallest of the royal pyramids completed during the Old Kingdom. The accompanying mortuary complex with its high and valley temples linked by a 750 m (2,460 ft) long causeway was lavishly decorated with painted reliefs, whose quality and variety surpass the usual royal iconography. Furthermore, Unas was the first pharaoh to have the Pyramid Texts carved and painted on the walls of the chambers of his pyramid, a major innovation that was followed by his successors until the First Intermediate Period (c. 2160–c. 2050 BC). These texts identify the king with Ra and with Osiris, whose cult was on the rise in Unas' time, and were meant to help the king reach the afterlife.