Hosokawa Tatsutaka (細川立孝, 1615 – July 4, 1645) was a Japanese samurai in the Sengoku period.
[1] Tatsutaka was the fourth son of Hosokawa Tadaoki (1563–1646).
The Uto Domain (30,000 koku) was created in Higo Province when Tadaoki abdicated, so that Tatsutaka would have a fief to inherit upon his father's death.
However, Tatsutaka died the same year, and rights of inheritance were transferred to his first son Yukitaka (1637–1690), so that he and his young siblings would be not be left impoverished.
The child Yukitaka thus became the first lord of the newly created Uto Domain on the death of his father in 1646.