Lifespan: 6/13 of Tenshō 17 (1589) to 4/4 of Kanei 13 (1636)
Other Names: Kumatarō (common), Sukenori (written with different character)
Rank: bushō, daimyō
Title: Junior Fifth Rank (Lower) and Assistant Master of the Eastern Capital Office, Master of the Palace Table
Lord: Toyotomi Hideyori → Tokugawa Ieyasu → Tokugawa Hidetada → Tokugawa Iemitsu
Father: Itō Suketake
Mother: Ako-no-kata (daughter of Itō Yoshimasu)
Siblings: Sister (wife of Itō Sukebira), Sukenori, 於仙, sister (wife of Takigawa 法直), Sukehisa
Wife: [Formal] Ōtawara clan, [Consort] Morimoto clan
Children: Sukehisa, Suketoyo
Itō Sukenori served as a bushō and daimyō from the Azuchi-Momoyama to early Edo periods.
Sukenori served as the second lord of the Hyūga-Obi domain and as the thirteenth head of the Hyūga-Itō clan (the nineteenth head of the Itō). His mother, Ako-no-kata, was a cousin of Azechi-no-tsubone, a courtier for the shōgun family at Edo Castle.
In 1589, Sukenori was born as the eldest son of Itō Suketake.
In 1600, during the Battle of Sekigahara, Sueknori served in the Eastern Army. Upon the counsel of a retainer named Inazu Shigemasa, he dispatched forces to Miyazaki Castle defended by Takahashi Mototane of the Western Army, toppling the base. Just around this time, however, Mototane switched sides to the Eastern Army so Miyazaki Castle was taken back. Sukenori received recognition from Tokugawa Ieyasu of his rights to his landholdings. Later, Sukenori held Inazu Shigemasa liable for the earlier events by killing him at Kiyotake Castle in Hyūga.
That same year, his father, Itō Suketake, died of illness in Ōsaka so he inherited the clan. During the Genna era (1615 to 1624), Sukenori fostered the cultivation of cedar trees indigenous to Obi which provided a key source of income for the domain.
In 1636, Sukenori died at the age of forty-eight. His eldest son, Itō Sukehisa, inherited the headship of the clan. His second son, Itō Suketoyo, became a servant of Tokugawa Iemitsu and received a stipend of 3,000 koku.