Hōjō Ujinao (北条 氏直: 1562 – December 19, 1591) was a Japanese daimyo of the late Sengoku period, and the final head of the Late Hōjō clan. An important figure in the history of Azuchi-Momoyama politics, he lost his entire domain following the siege in 1590. Despite this, he survived, and his family carried on as small daimyo in the Edo period. His adoptive son, Hōjō Ujimori, was the first daimyo of Sayama-han (Kawachi Province, 10,000 koku).