| Native Name: | 浜松藩 |
| Conventional Long Name: | Hamamatsu Domain |
| Common Name: | Hamamatsu Domain |
| Subdivision: | Han |
| Status Text: | under Tokugawa shogunate Japan |
| Government Type: | Daimyō |
| Capital: | Hamamatsu Castle |
| Today: | Shizuoka Prefecture |
| Year Start: | 1601 |
| Year End: | 1868 |
| Era: | Edo period |
was a Japanese domain of the Edo period, located in Tōtōmi Province. It was centered on what is now Hamamatsu Castle in what is now the city of Hamamatsu in Shizuoka Prefecture.
Hamamatsu was the residence of Tokugawa Ieyasu for much of his early career, and Hamamatsu Castle was nicknamed due to Ieyasu's promotion to shōgun. The domain was thus considered a prestigious posting, and was seen as a stepping stone in a daimyōs rise to higher levels with the administration of the Tokugawa shogunate, such rōjū or wakadoshiyori.
The domain had a population of 3324 samurai in 776 households at the start of the Meiji period. The domain maintained its primary residence (kamiyashiki) in Edo at Toranomon until the An'ei (1772–1781) period, and at Nihonbashi-Hamacho until the Meiji period [1]
As with most domains in the han system, Hamamatsu Domain consisted of several discontinuous territories calculated to provide the assigned kokudaka, based on periodic cadastral surveys and projected agricultural yields.[2] [3]
| Name | Tenure | Courtesy title | Court Rank | kokudaka | |
| Matsudaira (Sakurai) clan (fudai) 1601–1609 | |||||
| 1 | 1601–1609 | Uma-no-jo (右馬允) | Lower 5th (従五位下) | 50,000 koku | |
| Kōriki clan (fudai) 1619–1638 | |||||
| 1 | 1619–1638 | Sakon-no-taifu (左近大夫) | Lower 5th (従五位下) | 35,000 koku | |
| Matsudaira (Ogyū) clan (fudai) 1638–1644 | |||||
| 1 | 1638–1644 | Izumi-no-kami (和泉守) | Lower 5th (従五位下) | 36,000 koku | |
| Ōta clan (fudai) 1644–1678 | |||||
| 1 | 1644–1671 | Bitchu-no-kami (備中守) | Lower 5th (従五位下) | 35,000 koku | |
| 2 | 1671–1678 | Settsu-no-kami (摂津守) | Lower 4th (従四位下) | 35,000 koku | |
| Aoyama clan (fudai) 1678–1702 | |||||
| 1 | 1678–1679 | Inaba-no-kami (因幡守) | Lower 4th (従四位下) | 50,000 koku | |
| 2 | 1679–1685 | Izumi-no-kami (和泉守) | Lower 5th (従五位下) | 50,000 koku | |
| 3 | 1685–1702 | Shimotsuke-no-kami (下野守) | Lower 5th (従五位下) | 50,000 koku | |
| Matsudaira (Honjō) clan (fudai) 1702–1729 | |||||
| 1 | 1702–1723 | Hoki-no-kami (伯耆守) | Lower 4th (従四位下) | 70,000 koku | |
| 2 | 1702–1729 | Bungo-no-kami (豊後守) | Lower 5th (従五下) | 70,000 koku | |
| Matsudaira (Ōkōchi/Nagasawa clan) (fudai) 1729–1752 | |||||
| 1 | 1729–1744 | Izu-no-kami (伊豆守): Jijū (侍従) | Lower 4th (従四位下) | 70,000 koku | |
| 2 | 1744–1752 | Izu-no-kami (伊豆守) | Lower 5th (従五下) | 70,000 koku | |
| Matsudaira (Honjō) clan (fudai) 1749–1768 | |||||
| 1 | 1749–1752 | Bungo-no-kami (豊後守); Jijū (侍従) | Lower 4th (従四位下) | 70,000 koku | |
| 2 | 1752–1768 | Iyo-no-kami (伊予守) | Lower 5th (従五下) | 70,000 koku | |
| Inoue clan (fudai) | |||||
| 1 | 1768-1766 | Kawachi-no-kami (河内守); Jijū (侍従) | Lower 4th (従四位下) | 60,000 koku | |
| 2 | 1766–1786 | Kawachi-no-kami (河内守) | Lower 5th (従四位下) | 60,000 koku | |
| 3 | 1786–1817 | Kawachi-no-kami (河内守) | Lower 5th (従五下) | 60,000 koku | |
| Mizuno clan (fudai) 1817–1856 | |||||
| 1 | 1817–1845 | Echizen-no-kami (越前守); Jijū (侍従) | Lower 4th (従四位下) | 60,000 koku | |
| 2 | 1845–1856 | Izumi-no-kami (和泉守); Jijū (侍従) | Lower 4th (従四位下) | 50,000 koku | |
| Inoue clan (fudai) 1845-1868 | |||||
| 1 | 1845–1847 | Kawachi-no-kami (河内守); Jijū (侍従) | Lower 4th (従四位下) | 60,000 koku | |
| 2 | 1847–1868 | Kawachi-no-kami (河内守); Jijū (侍従) | Lower 4th (従四位下) | 60,000 koku | |