Hosokawa Tadatoshi was a Japanese samurai daimyō of the early Edo period. He was the head of Kumamoto Domain. He was a patron of the martial artist Miyamoto Musashi.

Suizen-ji Jōju-en is a tsukiyama Japanese garden located within Suizen-ji Park in the eastern part of the city of Kumamoto, Kumamoto Prefecture, Japan. It was built during the Edo period by the Hosoka