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.
- Occupation
- samurai
- Position held
- daimyo
- Citizenship
- Tokugawa shogunate, Japan
- Born
- December 21, 1586
- Died
- April 26, 1641
