Hoshina Masayuki | |
|---|---|
保科 正之 | |
 Hoshina Masayuki by Kanō Tan'yū, portrait at Hanitsu Jinja, Inawashiro, Fukushima | |
| 2nd Daimyō of Takatō Domain | |
| In office 1631–1636 | |
| Monarchs | Shōgun |
| Preceded by | Hoshina Masamitsu |
| Succeeded by | Torii Tadaharu |
| 1st Daimyō of Yamagata Domain | |
| In office 1636–1643 | |
| Monarch | Shōgun |
| Preceded by | Torii Tadatsune |
| Succeeded by | Matsudaira Naomoto |
| 1st Daimyō of Aizu Domain | |
| In office 1643–1669 | |
| Monarchs | Shōgun |
| Preceded by | None |
| Succeeded by | Hoshina Masatsune |
| Personal details | |
| Born | June 17, 1611 Edo, Japan |
| Died | February 4, 1673 (aged 61) |
| Spouse(s) | Kikuhime, daughter of Naito Masanaga of Sanuki Domain |
| Relations | Father: Tokugawa Hidetada Mother: Oshizu no Kata |
Hoshina Masayuki (保科 正之, June 17, 1611 – February 4, 1673) was a Japanese daimyō of the early Edo period, who was the founder of what became the Matsudaira house of Aizu. He was an important figure in the politics and philosophy of the early Tokugawa shogunate.