| Akayu | |
| Native Name Lang: | ja |
| Settlement Type: | Former municipality |
| Seal Type: | Emblem |
| Pushpin Map: | Japan |
| Pushpin Map Caption: | Location in Japan |
| Coordinates: | 38.05°N 151°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | Region |
| Subdivision Name1: | (Tōhoku) |
| Subdivision Type2: | Prefecture |
| Subdivision Name2: | Yamagata Prefecture |
| Subdivision Type3: | District |
| Subdivision Name3: | Higashiokitama District |
| Extinct Title: | Merged |
| Extinct Date: | April 1, 1967 (now part of Nan'yō) |
| Leader Title: | Mayor |
| Leader Title1: | Vice Mayor |
| Unit Pref: | Metric |
| Area Total Km2: | 41.10 |
| Population Total: | 12,860 |
| Population As Of: | 1965 |
| Population Density Km2: | 313 |
| Timezone1: | JST |
| Utc Offset1: | +09:00 |
| Blank Name Sec1: | City hall address |
was a town located in Higashiokitama District, Yamagata Prefecture, Japan.
As of 1967, the town had an estimated population of 12,860 and a population density of 313 persons per km2. The total area was 41.10 km2.
On April 1, 1967, Akayu was merged into the expanded city of Nan'yō and thus no longer exists as an independent municipality.
The village of Akayu was established on April 1, 1889, with the establishment of the municipalities system. It was raised to town status on December 12, 1895. On June 10, 1955, the village of Nakagawa was annexed by Akayu. On March 21, 1957, the Nakayama neighborhood of Akayu was annexed by the neighboring city of Kaminoyama. On April 1, 1967, the town of Akayu merged with the town of Miyauchi and the village of Wagō to form the city of Nan'yō.
English travel writer Isabella Bird visited Akayu on her travels in Japan in 1878. In Unbeaten Tracks in Japan she wrote of Akayu:
the frequented watering-place of Akayu in the north, is a perfect garden of Eden, 'tilled with a pencil instead of aplough,' growing in rich profusion rice, cotton, maize, tobacco, hemp, indigo, beans, egg-plants, walnuts, melons, cucumbers,persimmons, apricots, pomegranates; a smiling and plenteous land, an Asiatic Arcadia, prosperous and independent, all its bounteousacres belonging to those who cultivate them, who live under their vines, figs, and pomegranates, free from oppression--a remarkablespectacle under an Asiatic despotism.
Akayu is most famous for Akayu Onsen (赤湯温泉), a series of ryokan famed for their natural hot-springs which are believed to have medicinal properties. The town's name, which is literally translated as "red hot water", derives from a story in 1093. It is said that the feudal chief of Mutsu Province, Minamoto no Yoshitsuna took a wounded soldier to a hot spring bath. His blood immediately turned the water red and the wound closed.
is regarded as one of the top 100 cherry blossom viewing sites in Japan, and in 2000, an estimated 25,000 people came to the town in April to enjoy hanami ("flower viewing") parties. The district also has an internationally recognised hang-gliding venue, the Sky Park, which hosted the Third Women's Hang Gliding Championships in 1993.
Akayu's most famous ex-resident is Toyotarō Yūki, a former governor of the Bank of Japan, and the town has a museum devoted to his life.