Honda Tadakatsu, also called Honda Heihachirō, was a Japanese samurai, general (and later a daimyo) of the late Sengoku through early Edo period, who served Tokugawa Ieyasu. Honda Tadakatsu was one of the Tokugawa Four Heavenly Kings along with Ii Naomasa, Sakakibara Yasumasa and Sakai Tadatsugu.