| Hosokawa 細川 | |
|---|---|
 The emblem (mon) of the Hosokawa clan | |
| Home province | Various |
| Parent house |  Minamoto clan Ashikaga clan |
| Titles | Various |
| Founder | Ashikaga Yoshisue |
| Current head | Morihiro Hosokawa |
| Dissolution | still extant |
| Ruled until | 1947, Constitution of Japan renders titles obsolete |
| Cadet branches | Nagaoka clan Kumamoto Kumamoto-Shinden Udo Hitachi-Yatabe Saikyu clan |
The Hosokawa clan (細川氏, Hosokawa-shi) is a Japanese samurai kin group or clan.[1] The clan descends from the Seiwa Genji, a branch of the Minamoto clan, and ultimately from Emperor Seiwa, through the Ashikaga clan.[2] It produced many prominent officials in the Ashikaga shogunate's administration. In the Edo period, the clan was one of the largest landholding daimyo families in Japan. The current clan head Morihiro Hosokawa served as Prime Minister of Japan.