Honda Tadatomo (本多 忠朝, 1582 – June 3, 1615) was a Japanese samurai lord who was a retainer of the Tokugawa clan following the Azuchi–Momoyama period of the 16th century to the Edo period of the 17th century of Japan. Tadatomo was the younger son of Honda Tadakatsu, one of Four Guardians of the Tokugawa.[1]