Hōjō Ujinori (北条 氏規, 1545 – March 22, 1600) was the fourth son of Hōjō Ujiyasu. Very early in his life he became an acquaintance of Tokugawa Ieyasu, because he alike was also at the time a hostage of the Imagawa. Far later, he was persuaded to surrender when Odawara was attacked by the likes of Toyotomi Hideyoshi. He then set off to Odawara in attempts to negotiate peace.