Tokugawa Tsunanari (徳川 綱誠, September 4, 1652 – July 1, 1699) was daimyō of Owari Domain during early-Edo period Japan.
On the retirement of his father on April 27, 1693, Tsunanari became the 3rd Tokugawa daimyō of Owari Domain, with 3rd court rank and the courtesy title of Chūnagon.
Although officially daimyō, all power remained in the hands of his retired father and Tsunanari spent most of his time in various scholarly pursuits, including starting work on a comprehensive history of Owari Province in 1698.
In addition to his official wife (a daughter of court noble Hirohata Tadayki), Tsunanari had 16 concubines, by whom he had a total of 40 children (22 male, 18 female).
Tsunanari died on July 1, 1699, by eating a tainted strawberry, and was succeeded by his 10th son, Tokugawa Yoshimichi.