Ōkubo clan
| Ōkubo 大久保 | |
|---|---|
Ōkubo clan mon | |
| Home province | Mikawa |
| Parent house | Fujiwara clan via the Utsunomiya clan |
| Titles | daimyō, viscount |
| Founder | Ōkubo Tadatoshi |
| Final ruler | Ōkubo Tadayoshi (II) |
| Founding year | 15th century |
| Dissolution | still extant |
| Ruled until | 1873 (Abolition of the han system) |
| Cadet branches | four cadet branches to the Meiji Restoration |
The Ōkubo clan (Japanese: 大久保氏, Hepburn: Ōkubo-shi) were a samurai kin group which rose to prominence in the Sengoku period and the Edo periods. Under the Tokugawa shogunate, the Ōkubo, as hereditary vassals of the Tokugawa clan, were classified as one of the fudai daimyō clans.