Ehime Prefecture

Ehime Prefecture is a prefecture of Japan on the island of Shikoku, facing the Seto Inland Sea. Its capital and largest city is Matsuyama, which is also the largest city on Shikoku. The prefecture covers approximately 5,676 square kilometres and includes a varied landscape of mountain ranges, agricultural districts, coastal industrial zones, peninsulas, and islands. It borders Kagawa, Tokushima, and Kōchi prefectures, and has a very short maritime boundary with Hiroshima Prefecture at Hyōtanjima. The area was historically known as Iyo Province. Its older history is closely associated with fishing, maritime trade, seafaring, and coastal defence. The name Ehime derives from the Kojiki, where Iyo is mythologically described as Ehime, or “lovely princess.” Following the Battle of Sekigahara, the Tokugawa shogunate reassigned territories in the region to allied lords. Katō Yoshiaki built Matsuyama Castle, helping establish the political and urban foundations of modern Matsuyama. Ehime combines traditional culture with a diversified regional economy. Coastal areas around Imabari and Saijō are important centres for shipbuilding, chemicals, petroleum refining, paper, and cotton textiles. Imabari is associated with one of Japan’s largest shipbuilding clusters. Rural and coastal communities also depend on agriculture, aquaculture, and fishing. Ehime is especially identified with citrus production, including mikan mandarins and iyokan, as well as cultured pearls. The Ikata Nuclear Power Plant supplies a substantial share of the electricity used across Shikoku. Tourism is another important part of the prefecture’s public identity. Dōgo Onsen in Matsuyama is widely regarded as one of Japan’s oldest hot-spring resorts and has operated for more than two millennia according to local tradition. Other attractions include Matsuyama Castle, the Seto Inland Sea islands, the Sadamisaki Peninsula, Ishizuchi and the surrounding mountain areas, historic districts, museums, festivals, and cycling routes. The prefecture’s cultural profile is also reinforced by literary and cinematic associations, including Natsume Sōseki’s Botchan, Ryōtarō Shiba’s Saka no Ue no Kumo, and works filmed or set in Matsuyama and other parts of Ehime. Ehime maintains international exchange relationships in education, culture, sport, and economic development with regions in Canada, China, the United States, and Australia. It also promotes local sports teams, regional festivals, food production, hot-spring tourism, and active-mobility initiatives. The prefecture is therefore best understood not as a consumer brand but as a public-sector territorial identity representing local government, residents, industries, cultural assets, and regional development.

Ehime occupies the northwestern part of Shikoku and corresponds broadly to the historic province of Iyo. Before the modern prefectural system, the region’s coastal position supported fishing, seafaring, maritime exchange, and defensive activity. Its sailors were associated with the protection of Japanese waters, including during periods when piracy and foreign invasion were concerns. The region’s political structure changed substantially after the Battle of Sekigahara in 1600. The Tokugawa shogunate distributed domains in Iyo among allied lords, and Katō Yoshiaki constructed Matsuyama Castle. The castle and its surrounding settlement became the basis of Matsuyama’s later prominence as the region’s administrative and cultural centre. The name Ehime comes from the Kojiki, an early Japanese chronicle that gives Iyo a mythological name translated as “lovely princess.” During Japan’s transition to modern government in the nineteenth century, the former domain system was replaced by prefectural administration. Ehime subsequently developed as a regional unit linking the cities, towns, islands, agricultural districts, and industrial ports of northwestern Shikoku. Matsuyama became the prefectural capital, while Imabari, Niihama, and Saijō emerged as major urban and industrial centres. Geography has strongly influenced Ehime’s development. The prefecture faces the Seto Inland Sea and contains an extensive coastline, numerous islands, the mountainous interior of Shikoku, and the long Sadamisaki Peninsula, described as Japan’s narrowest peninsula. Protected landscapes include parts of Setonaikai and Ashizuri-Uwakai national parks, Ishizuchi Quasi-National Park, and several prefectural natural parks. This combination of sea, mountains, islands, and fertile agricultural areas supports tourism, fisheries, farming, and varied transport links. Modern Ehime has a mixed economy. Imabari and Saijō are associated with shipbuilding and other coastal industries, while chemical manufacturing, petroleum refining, paper, and cotton textiles are also significant. Agriculture and fisheries remain central to many rural communities. Citrus cultivation, particularly mikan and iyokan, is one of the prefecture’s most recognizable economic and cultural signatures. Cultured pearls are another notable product. The Ikata Nuclear Power Plant is an important element of the region’s energy infrastructure. Matsuyama’s Dōgo Onsen, associated with more than two thousand years of hot-spring history, has helped make the prefecture a major domestic tourism destination. Literary works such as Botchan and Saka no Ue no Kumo have contributed to the cultural image of Matsuyama and Ehime, while festivals such as the Uwajima Ushi-oni Festival, Niihama Taiko Festival, and Matsuyama Autumn Festival express distinctive local traditions. Ehime also supports professional and semi-professional football, baseball, and basketball teams. The prefecture has promoted international relationships involving education, culture, sports, and economic exchange. It has links with regions in Canada, China, the United States, and Australia. In recent years, cycling and active mobility have become increasingly visible in its regional development and tourism agenda, including the planned hosting of Velo-city in 2027. Ehime today functions as a prefectural government, economic region, tourism destination, and territorial identity rather than as a conventional commercial brand.

• 2012

  Rare-earth deposits reported near Matsuyama

  [1]Ehime Prefectureen.wikipedia.org

  Researchers from the University of Tokyo and Ehime University reported the discovery of rare-earth deposits in the Matsuyama area.

• 2008

  Shodō Performance Koshien begins

  [1]Ehime Prefectureen.wikipedia.org

  A performance-calligraphy competition was established in Shikokuchūō, helping develop a distinctive regional cultural event.

• Iyo Province forms the historical basis of Ehime

  [1]Ehime Prefectureen.wikipedia.org

  The territory now known as Ehime was historically identified as Iyo Province, a maritime region on Shikoku.

• Matsuyama Castle establishes a political centre

  [1]Ehime Prefectureen.wikipedia.org

  After the Battle of Sekigahara, Katō Yoshiaki built Matsuyama Castle, contributing to the later importance of Matsuyama.

• Velo-city conference scheduled for Ehime

  [1]Ehime Prefectureen.wikipedia.org

  Ehime is scheduled to host the international Velo-city conference devoted to daily cycling and active mobility.

A maritime and agricultural region of Shikoku positioned around citrus production, shipbuilding, hot-spring and cultural tourism, distinctive local festivals, and international regional exchange.

• Agricultural products

  Ehime citrus

  Ehime is strongly associated with citrus agriculture, especially mikan mandarins and iyokan. These fruits are grown in coastal and rural districts and are among the prefecture’s most recognizable regional products.

• Shipbuilding

  Imabari shipbuilding

  The Imabari area hosts a major Japanese shipbuilding cluster. Shipyards and related maritime businesses form an important part of Ehime’s coastal industrial economy.

• Tourism and hospitality

  Dōgo Onsen

  Dōgo Onsen is Matsuyama’s best-known hot-spring attraction. Its historic bathing tradition, public bath facilities, and literary and cultural associations make it a flagship tourism asset for Ehime.

1. 1Ehime Prefectureen.wikipedia.org
2. 2Official Ehime Prefecture websitepref.ehime.jp