| Native Name: | 高遠藩 Takatō-han |
| Conventional Long Name: | Takatō Domain |
| Common Name: | Takatō Domain |
| Subdivision: | Domain |
| Nation: | Japan |
| Title Leader: | Daimyō |
| Leader1: | Hoshina Masamitsu (first) |
| Year Leader1: | 1600–1631 |
| Leader2: | Naitō Yorinao (last) |
| Year Leader2: | 1859–1871 |
| Capital: | Takatō Castle |
| Coordinates: | 35.8332°N 138.0625°W |
| Membership Title1: | Province |
| Membership1: | Shinano |
| Today: | Nagano Prefecture |
| Year Start: | 1600 |
| Year End: | 1871 |
| Era: | Edo period |
was a domain of the Tokugawa Shogunate of Japan during the Edo period from 1600 to 1871.
The Takatō Domain was based at Takatō Castle in Shinano Province, in the modern city of Ina, located in the Chūbu region of the island of Honshu.[1] The Takatō Domain was ruled by the fudai daimyō of the Hoshina clan from 1600 to 1636, the Torii clan from 1636 to 1689, and the Naitō clan from 1691 to 1871, with a Kokudaka value of 33,000 koku. The Takatō Domain was dissolved in the abolition of the han system in 1871 by the Meiji government and its territory was absorbed into Nagano Prefecture.
The territory around Takatō was ruled during the Sengoku period by Takatō Yoritsugu (d. 1552). After his castle fell to Takeda Shingen in the Siege of Takatō in 1545, it was given over to one of Shingen's sons, Nishina Morinobu. Takatō then came under the control of Hoshina Masatoshi, a retainer of Tokugawa Ieyasu, following the defeat and subsequent destruction of the Takeda clan following the second Siege of Takatō in 1582.[2]
Following the Battle of Sekigahara in 1600, and the establishment of the Tokugawa shogunate in 1603, Hoshina Masamitsu, the grandson of Masatoshi, became the first Edo period daimyō of Takatō, and the domain was officially ranked at a kokudaka of 25,000 koku. Masamitsu raised an illegitimate son of shōgun Tokugawa Hidetada as his own, under the name Hoshina Masayuki, and was rewarded with a 5,000 koku increase for his domain in 1618. Following Hidetada's death in 1632, Masayuki was transferred to Yamagata Domain in Dewa Province in 1636, with an income of 200,000 koku.[3]
Torii Tadaharu, the third son of Torii Tadamasa of Yamagata Domain, replaced him as lord of Takatō, with an income of 32,000 koku. The next lord, Torii Tadanori, however, died while under house arrest due to a scandal at Edo in 1689, leaving the clan's succession in the hands of the shogunate. Tadanori's successor in the family, Torii Tadahide, was demoted to a 10,000 koku holding, Shimomura Domain in Noto Province. As a result, Takatō briefly became tenryō administered directly by the shogunate until 1691, when Naitō Kiyokazu was reassigned from Tondabayashi Domain in Settsu Province to Takatō. The domain began to have financial troubles beginning under the following lord, Naitō Yorinori, who made efforts at reforms and innovations to solve the problems. The Ejima-Ikushima affair occurred around the same time, resulting in the shogunal consort named Ejima, banished from Edo, being left in the custody of Takatō.[4]
The seventh Naitō lord of Takatō, Naitō Yoriyasu, oversaw numerous development projects, including a trading market, a mulberry plantation operated directly by the domain, educational institutions and land intensification projects. These changes, however, brought numerous peasant revolts, and instability to the realm.
Towards the Bakumatsu period, the final daimyō, Naitō Yorinao, established a han school and took part in the campaigns by the shogunate against Chōshū Domain. During the 1868 Boshin War, however, Takatō sided with the newly founded Meiji government army against the last supporters of the shogunate and sent forces to fight in the Battle of Hokuetsu and the Battle of Aizu