The is a samurai family said to be descended from Fujiwara no Yamakage (d. March 24, 888). Their historical significance derives from their successes during the Genpei War and their subsequent affiliation with the Hōjō clan.
Important figures of the clan are:
- Adachi Kagemori
- Adachi Morinaga
thumb|left|600px|The [[Mōko Shūrai Ekotoba, painted during the middle of the Kamakura period, showing the Adachi clan residence at Amanawa.]]
Genealogy
Bold names denote the head of family. Solid lines denote direct relations. The superscript numbers show the line of succession. The organization is in birth order.<!--構成の都合で出生順より組み替え-->