Hatakeyama Yoshinori served as a sengoku daimyō of Noto Province during the Sengoku period.  He was the head of the Noto-Hatakeyama clan.

In 1554, Yoshinori was born as the eldest son of Hatakeyama Yoshitsuna, the ninth head of he clan.

In 1566, Yoshinori’s father (Yoshitsuna) and grandfather (Hatakeyama Yoshitsugu) were expelled from Noto by senor retainers in an event known as the Political Incident of Eiroku 9.  Thereafter, prior to his coming-of-age ceremony, the youthful Yoshinori was backed by Yusa Tsugumitsu, Chō Tsugutsura, and Yashiro Toshimori to serve as a puppet leader, while the retainers held the real power in the clan.  Despite his lack of authority, in 1571, Yoshinori was invested with the title of Master of the Office of Palace Repairs and his name appears on a list of donors for construction of the Keta Grand Shrine in the Hakui District of Noto in 1573.  The Keta Grand Shrine was designated as an ichinomiya, or shrine of the highest rank in Noto.

In 1574, Yoshinori suddenly died.  There are various theories regarding the cause of his death.  He may have died of illness or been assassinated, in which case the perpetrators may have been Yusa Tsugumitsu and Nukui Kagetaka.  He was succeeded by his younger brother, Hatakeyama Yoshitaka.

The foregoing are traditional theories but, owing to a lack of authenticated accounts so these remain suppositions.  There is also a possibility that references to his younger brother, Yoshinori, were actually references to Yoshinori and these are the same individual.