Honda Tadatoki (本多 忠刻, May 11, 1596 – June 30, 1626) was a Japanese daimyō of the early Edo period.

Tadatoki was born as the eldest son of Honda Tadamasa.

His mother Kumahime was a granddaughter of Tokugawa Ieyasu and Oda Nobunaga.

Tadatoki also sponsored the swordsman Miyamoto Musashi for a time.

Miyamoto Mikinosuke committed junshi soon afterward, choosing to follow his lord in death