was a Japanese daimyà  of the early Edo period who ruled the Takatà  Domain in Shinano Province (modern-day Nagano Prefecture).
Tadanori was the son of Torii Tadaharu, the previous lord. He succeeded to family headship upon his father's death; however, he continued his father's draconian rule of the Takatà  domain.
During the shogunate's investigation into a scandal involving Takatà  retainer Takasaka Gonbei, Tadanori was ordered confined to Edo Castle; he committed suicide during his confinement. The Takatà  domain was confiscated from the Torii family; however, as the Torii family was a famed fudai family dating back to Torii Mototada, Tadanori's heir Tadateru was granted four districts in Noto Province, and made the lord of the Shimomura Domain.
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