Viscount Mishima Michitsune (三島通庸, 26 June 1835 – 23 October 1888) was a vassal of the Satsuma Domain during the Late Tokugawa shogunate, Home Ministry bureaucrat and viscount. He is also commonly known as Yahei or Yahée (弥兵衞 Yahee).
His second daughter Mineko was married to Ōkubo Toshimichi's second son Makino Nobuaki. His son Yatarō Mishima was an eighth-generation custodian of the Bank of Japan, while his grandson Michiharu Mishima served as the fourth Chief Scout of the Scout Association of Japan.
In 1874, Mishima became the Ordinance of Sakata Prefecture. The focus of this new post soon turned to countermeasures aimed at an agrarian-sector demonstration known as the Wappa Rebellion. This was a peasant protest opposed to a failure on the part of the ordinance and government officials, who had come from being lords and vassals during the feudal era, to uphold a central edict and thereby imposing labour and taxes identical to those of the previous period. Mishima thus embarked on a full-scale reshuffling of all clerks and officials whilst simultaneously dealing with pressure from the agrarian sector. That following year the protests had been settled through the courts with the money returned to the farmers.
In August 1875, Sakata Prefecture became Uruoka Prefecture; the following year it became Yamagata Prefecture through the merging of Okitama (also Oitama) and Yamagata prefectures. Accordingly, Mishima became Ordinance of both Uruoka and Yamagata prefectures. Mishima's central policy for Yamagata was the maintenance of roads and bridges and the building of public facilities.
During the Edo Period, the Yamagata region formed a strong bond with Osaka, even more so than with Edo, due to shipping routes via the Sea of Japan and Mogami River. However, when land-based transportation was emphasised as an objective of the Meiji Era government, traffic control on land routes were progressed so as to form ties with Tokyo. Firstly, allowance was made for the Kuriko Highway between Yonezawa and Fukushima, which was completed in 1880. Then, in 1882 the Sekiyama Highway between Yamagata and Sendai was completed. Both these routes were constructed to allow for vehicles (or, in those days, horse-carriages).