is the smallest of the
four main islands of
Japan
Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
. It is long and between at its widest. It has a population of 3.8 million, the least populated of Japan's four main islands. It is south of
Honshu
, historically known as , is the largest of the four main islands of Japan. It lies between the Pacific Ocean (east) and the Sea of Japan (west). It is the list of islands by area, seventh-largest island in the world, and the list of islands by ...
and northeast of
Kyushu
is the third-largest island of Japan's Japanese archipelago, four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa Island, Okinawa and the other Ryukyu Islands, Ryukyu (''Nansei'') Ryukyu Islands, Islands ...
.
Shikoku's ancient names include , , and , and its current name refers to the four former
provinces
A province is an administrative division within a country or state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire's territorial possessions outside Italy. The term ''provi ...
that make up the island:
Awa,
Tosa,
Sanuki, and
Iyo.
Geography

Shikoku Island, comprising Shikoku and its surrounding islands, covers about and consists of four
prefectures:
Ehime,
Kagawa,
Kōchi, and
Tokushima
is a Prefectures of Japan, prefecture of Japan located on the island of Shikoku. Tokushima Prefecture has a population of 682,439 (1 February 2025) and has a geographic area of 4,146 Square kilometre, km2 (1,601 sq mi). Tokushima Prefecture b ...
. Across the
Seto Inland Sea lie
Wakayama,
Osaka
is a Cities designated by government ordinance of Japan, designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the List of cities in Japan, third-most populous city in J ...
,
Hyōgo,
Okayama,
Hiroshima
is the capital of Hiroshima Prefecture in Japan. , the city had an estimated population of 1,199,391. The gross domestic product (GDP) in Greater Hiroshima, Hiroshima Urban Employment Area, was US$61.3 billion as of 2010. Kazumi Matsui has b ...
, and
Yamaguchi Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Yamaguchi Prefecture has a population of 1,377,631 (1 February 2018) and has a geographic area of 6,112 Square kilometre, km2 (2,359 Square mile, sq mi). ...
s on
Honshu
, historically known as , is the largest of the four main islands of Japan. It lies between the Pacific Ocean (east) and the Sea of Japan (west). It is the list of islands by area, seventh-largest island in the world, and the list of islands by ...
. To the west lie
Ōita and
Miyazaki Prefectures on
Kyushu
is the third-largest island of Japan's Japanese archipelago, four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa Island, Okinawa and the other Ryukyu Islands, Ryukyu (''Nansei'') Ryukyu Islands, Islands ...
.

Shikoku is ranked as the
50th largest island by area in the world. Additionally, it is ranked as the
23rd most populated island in the world, with a population density of 193 inhabitants per square kilometre (500/sq mi).
Mountains running east and west divide Shikoku into a narrow northern subregion, fronting on the
Seto Inland Sea, and a southern part facing the Pacific Ocean. The ''
Hydrangea hirta'' species can be found in these mountain ranges. Most of the 3.8 million inhabitants live in the north, and all but one of the island's few larger cities are located there.
Mount Ishizuchi () in Ehime at is the highest mountain on the island. Industry is moderately well developed and includes the processing of ores from the important
Besshi copper mine. Land is used intensively. Wide alluvial areas, especially in the eastern part of the zone, are planted with rice and subsequently are double-cropped with winter wheat and barley. Fruit is grown throughout the northern area in great variety, including citrus fruits, persimmons, peaches, and grapes. Because of wheat production,
Sanuki udon () became an important part of the diet in Kagawa Prefecture (formerly Sanuki Province) in the
Edo period
The , also known as the , is the period between 1600 or 1603 and 1868 in the history of Japan, when the country was under the rule of the Tokugawa shogunate and some 300 regional ''daimyo'', or feudal lords. Emerging from the chaos of the Sengok ...
.
The larger southern area of Shikoku is mountainous and sparsely populated. The only significant lowland is a small alluvial plain at
Kōchi, the prefectural capital. The area's mild winters stimulated some
truck farming, specializing in growing out-of-season vegetables under plastic covering. Two crops of rice can be cultivated annually in the southern area. The
pulp and paper industry took advantage of the abundant forests and hydroelectric power.
The major river in Shikoku is the
Yoshino River. It runs from its source close to
Mount Ishizuchi, flowing basically west to east across the northern boundaries of Kōchi and Tokushima Prefectures, reaching the sea at the city of Tokushima. The Yoshino is famous for Japan's best white-water rafting, with trips going along the Oboke Koboke sections of the river.
Shikoku has four important capes: Gamōda in
Anan, Tokushima on the easternmost point on the island, Sada in
Ikata, Ehime on the westernmost point. Muroto in
Muroto, Kōchi and Ashizuri, the southern extreme of Shikoku, in
Tosashimizu, Kōchi, jut into the Pacific Ocean. The island's northernmost point is in
Takamatsu
file:Takamatsu City Hall.jpg, 270px, Takamatsu City Hall
file:Takamatsu city center area Aerial photograph.2007.jpg, 270px, Aerial view of Takamatsu city center
file:Takamatsu200910cut.JPG, 270px, View from Yashima to Takashima port
is a capital ...
.
Unlike the other three major islands of Japan, Shikoku has no active volcanoes, and is the largest of Japan's islands to completely lack them. But Shikoku did experience volcanic activity in the distant prehistoric past; a major volcanic
caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption. An eruption that ejects large volumes of magma over a short period of time can cause significant detriment to the str ...
in the area of Mount Ishizuchi was active during the
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...
around 14 million years ago and the small
volcanic cone of
Mount Iino at an unknown date.
File:Mount_Ishizuchi.jpg, Mount Ishizuchi is the highest mountain in Shikoku.
File:Ashizurimisaki Cape.JPG, Cape Ashizuri is at the southernmost tip of Shikoku.
File:Shimanto_sada_chinkabashi_fukin.jpg, Shimanto River
File:Seto-Inland-Sea-Photo.jpg, Seto Inland Sea
Population
Shikoku has a total population of 3,630,320 in 2022. The largest city is
Matsuyama
270px, Matsuyama City Hall
270px, Ehime Prefectural Capital Building
is the capital city of Ehime Prefecture, on the island of Shikoku, in Japan and is also Shikoku's largest city. , the city had an estimated population of 505,948 in 243,541 h ...
(population: 507,137) and is the capital of
Ehime Prefecture
is a Prefectures of Japan, prefecture of Japan located on the island of Shikoku. Ehime Prefecture has a population of 1,334,841 and a geographic area of 5,676 km2 (2,191 sq mi). Ehime Prefecture borders Kagawa Prefecture to the northeast, Toku ...
. Shikoku is the main island with the third largest population density, at .
File:松山 Matsuyama - panoramio.jpg, Matsuyama City
File:Takamatsu-M3687.jpg, Takamatsu City
File:高知城 天守からの景色3 Kochi Castle - panoramio.jpg, Kōchi City
File:Tokushima City View from the Top of Bizan 20200405.jpg, Tokushima City
Per Japanese census data, and, Shikoku region's peak population was at 1950 and has had negative population growth from 1950 to 1970 and 1990 onward.
Culture
Society and architecture
Shikoku has historically been quite isolated and therefore it has kept the original characteristics of Japan for a longer period, especially in regards to vegetation and some architectural techniques. There are many Buddhist temples.
The "lost" Shikoku has been described by an American writer,
Alex Kerr, who lived in a remote mountain village near Oboke (大歩危) for many years from 1970 onwards.
Ashizuri-Uwakai National Park
is a List of Japanese national parks, national park at the southwestern tip of the island of Shikoku, Japan. The park is spread over small areas on the western side of Shikoku in Ehime Prefecture, Ehime and Kōchi Prefecture, Kōchi prefectures. ...
is located in the south-west part of Shikoku.
Traditions

Shikoku is also famous for its
88-temple pilgrimage of temples. The pilgrimage was established by the Heian-period Buddhist priest
Kūkai, a native of present-day Zentsūji-cho in Kagawa prefecture. According to legend, Kūkai still appears to pilgrims today. Most modern-day pilgrims travel by bus, rarely choosing the old-fashioned method of going by foot. They are seen wearing white jackets emblazoned with the characters reading ''dōgyō ninin'' () meaning "two traveling together".
Tokushima Prefecture also has its annual
Awa Odori running in August at the time of the
Obon festival, which attracts thousands of tourists each year from all over Japan and from abroad.
Kōchi Prefecture is home to the first annual
Yosakoi festival. The largest festival in Kōchi, it takes place in August every year and attracts dancers and tourists from all over Japan.
Food
One of the major foods of Shikoku is
udon
Udon ( or ) is a thick noodle made from wheat flour, used in Japanese cuisine. There are a variety of ways it is prepared and served. Its simplest form is in a soup as with a mild broth called made from dashi, soy sauce, and mirin. It is usual ...
.
Udon
Udon ( or ) is a thick noodle made from wheat flour, used in Japanese cuisine. There are a variety of ways it is prepared and served. Its simplest form is in a soup as with a mild broth called made from dashi, soy sauce, and mirin. It is usual ...
is often served hot as a noodle soup in its simplest form, as ''kake udon'', in a mildly flavoured broth called ''
kakejiru,'' which is made of
dashi, soy sauce (
shōyu), and
mirin
is a type of rice wine and a common ingredient in Japanese cuisine, Japanese cooking. It is similar to sake but with a lower alcohol (drug), alcohol content and higher sugar content. The sugar content is a complex carbohydrate that forms natur ...
. It is usually topped with thinly chopped scallions. Other common toppings include
tempura, often prawn or ''
kakiage'' (a type of mixed tempura
fritter
A fritter is a portion of meat, seafood, fruit, vegetables, or other ingredients which have been Batter (cooking), battered or breading, breaded, or just a portion of dough without further ingredients, that is deep-frying, deep-fried. Fritters ar ...
), or ''
aburaage'', a type of deep-fried
tofu
or bean curd is a food prepared by Coagulation (milk), coagulating soy milk and then pressing the resulting curds into solid white blocks of varying softness: ''silken'', ''soft'', ''firm'', and ''extra (or super) firm''. It originated in Chin ...
pockets seasoned with sugar, mirin, and soy sauce. A thin slice of
kamaboko
is a type of Curing (chemistry), cured , a processed seafood product common in Japanese cuisine. It was initially made in the year 1115.
Production and uses
is made by forming various Purée, pureed deboned whitefish (fisheries term), whit ...
, a halfmoon-shaped fish cake, is often added.
Shichimi can be added to taste. Another specialty is
Kōchi's signature dish, seared
bonito.
The warm climate of Shikoku lends itself to the cultivation of citrus fruits. As a result,
yuzu
Yuzu (''Citrus'' × ''junos'', from Japanese language, Japanese or ; ) is a citrus fruit and plant in the family Rutaceae of China, Chinese origin. Yuzu has been cultivated mainly in East Asia, though it has also recently been grown in New Z ...
,
mikan and other citrus fruits are plentiful on Shikoku and have become synonymous with the regions they are grown in.
Movements
Pioneering
natural farmer Masanobu Fukuoka, author of ''
The One-Straw Revolution'', developed his methods here on his family's farm.
Sports
Historically no Shikoku-based
sports
Sport is a physical activity or game, often competitive and organized, that maintains or improves physical ability and skills. Sport may provide enjoyment to participants and entertainment to spectators. The number of participants in ...
team has competed in the top Japanese division of
baseball
Baseball is a bat-and-ball games, bat-and-ball sport played between two team sport, teams of nine players each, taking turns batting (baseball), batting and Fielding (baseball), fielding. The game occurs over the course of several Pitch ...
,
football (soccer)
Association football, more commonly known as football or soccer, is a team sport played between two teams of 11 Football player, players who almost exclusively use their feet to propel a Ball (association football), ball around a rectangular f ...
or even
rugby union
Rugby union football, commonly known simply as rugby union in English-speaking countries and rugby 15/XV in non-English-speaking world, Anglophone Europe, or often just rugby, is a Contact sport#Terminology, close-contact team sport that orig ...
. However, Tokushima Vortis have had two spells in the top flight of Japanese soccer (
J1) in 2014 and 2021. Currently the major teams competing in Shikoku's major cities include:
*
Naruto,
Tokushima
is a Prefectures of Japan, prefecture of Japan located on the island of Shikoku. Tokushima Prefecture has a population of 682,439 (1 February 2025) and has a geographic area of 4,146 Square kilometre, km2 (1,601 sq mi). Tokushima Prefecture b ...
:
**
Tokushima Vortis (football,
J2)
**
Tokushima Indigo Socks
The are a baseball team in the Shikoku Island League plus of Japan. Established in 2005, the Indigo Socks mainly play their home games at Tokushima prefecture Kuramoto stadium in Tokushima, Tokushima, Tokushima, Tokushima Prefecture.
They won th ...
(baseball,
SKIL)
*
Matsuyama
270px, Matsuyama City Hall
270px, Ehime Prefectural Capital Building
is the capital city of Ehime Prefecture, on the island of Shikoku, in Japan and is also Shikoku's largest city. , the city had an estimated population of 505,948 in 243,541 h ...
,
Ehime
**
Ehime FC (football, J2)
**
Ehime Mandarin Pirates (baseball, SKIL)
*
Imabari,
Ehime:
**
FC Imabari (football, J2)
*
Takamatsu
file:Takamatsu City Hall.jpg, 270px, Takamatsu City Hall
file:Takamatsu city center area Aerial photograph.2007.jpg, 270px, Aerial view of Takamatsu city center
file:Takamatsu200910cut.JPG, 270px, View from Yashima to Takashima port
is a capital ...
,
Kagawa:
**
Kamatamare Sanuki (football,
J3)
**
Kagawa Olive Guyners (baseball, SKIL)
*
Kōchi,
Kōchi:
**
Kōchi United SC (football, J3)
**
Kōchi Fighting Dogs (baseball, SKIL)
Notable sportspeople
Two time darts Women's World Champion
Mikuru Suzuki is a native of Takamatsu in Kagawa Prefecture on Shikoku.
Transportation
Roads
Shikoku is connected to Honshu by three
expressways, which together form the
Honshū–Shikoku Bridge Project.
*
Kobe-Awaji-Naruto Expressway (Eastern Shikoku)
*
Nishiseto Expressway (Western Shikoku)
*
Seto-Chūō Expressway (Central Shikoku)
The eastern gateway to Shikoku,
Naruto in
Tokushima Prefecture has been linked to the
Kobe-Awaji-Naruto Expressway since 1998. This line connects Shikoku to the
Kansai area which has a large population, including the large
conurbation
A conurbation is a region consisting of a number of metropolises, cities, large towns, and other urban areas which, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most ...
s of
Osaka
is a Cities designated by government ordinance of Japan, designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the List of cities in Japan, third-most populous city in J ...
,
Kyoto
Kyoto ( or ; Japanese language, Japanese: , ''Kyōto'' ), officially , is the capital city of Kyoto Prefecture in the Kansai region of Japan's largest and most populous island of Honshu. , the city had a population of 1.46 million, making it t ...
, and
Kobe
Kobe ( ; , ), officially , is the capital city of Hyōgo Prefecture, Japan. With a population of around 1.5 million, Kobe is Japan's List of Japanese cities by population, seventh-largest city and the third-largest port city after Port of Toky ...
. Therefore, the Kobe-Awaji-Naruto Expressway carries a large traffic volume. Many highway buses are operated between
Kansai and
Tokushima Prefecture.
The central part of Shikoku is connected to Honshu by ferry, air, and – since 1988 – by the
Great Seto Bridge network. Until completion of the bridges, the region was isolated from the rest of Japan. The freer movement between Honshu and Shikoku was expected to promote economic development on both sides of the bridges, which has not materialized yet.
Within the island, a web of
expressways and
national highways
National Highways (NH), formerly Highways England and before that the Highways Agency, is a State-owned enterprise, government-owned company charged with operating, maintaining and improving Roads in England, motorways and major A roads in Eng ...
connects the major population centers. These include
Kōchi Expressway,
Matsuyama Expressway,
Takamatsu Expressway,
Tokushima Expressway,
Routes 11,
32,
33,
55, and
56.
Rail
The
Shikoku Railway Company (JR Shikoku) serves the island and connects to Honshu via the
Great Seto Bridge. JR lines include:
*
Dosan Line
*
Honshi Bisan Line
*
Kōtoku Line
*
Mugi Line
*
Naruto Line
*
Seto Ōhashi Line
*
Tokushima Line
*
Uchiko Line
*
Yodo Line
*
Yosan Line
Private railway lines operate in each of the four prefectures on Shikoku.
Air travel
Shikoku lacks a full international airport but has four regional/domestic airports (
Tokushima Airport,
Takamatsu Airport,
Kōchi Ryōma Airport and
Matsuyama Airport). All of these airports have flights to Tokyo and other major Japanese cities such as
Osaka
is a Cities designated by government ordinance of Japan, designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the List of cities in Japan, third-most populous city in J ...
,
Nagoya
is the largest city in the Chūbu region of Japan. It is the list of cities in Japan, fourth-most populous city in Japan, with a population of 2.3million in 2020, and the principal city of the Chūkyō metropolitan area, which is the List of ...
,
Sapporo
is a Cities designated by government ordinance of Japan, designated city in Hokkaido, Japan. Located in the southwest of Hokkaido, it lies within the alluvial fan of the Toyohira River, a tributary of the Ishikari River. Sapporo is the capital ...
, and
Fukuoka
is the List of Japanese cities by population, sixth-largest city in Japan and the capital city of Fukuoka Prefecture, Japan. The city is built along the shores of Hakata Bay, and has been a center of international commerce since ancient times. ...
. International flights to
Seoul
Seoul, officially Seoul Special Metropolitan City, is the capital city, capital and largest city of South Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's List of cities b ...
,
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
are serviced by
Asiana Airlines
Asiana Airlines Inc. ( ) is a South Korean airline headquartered in Seoul.[Home]
." Asiana Airlines. Retrieved 13 September 2 ...
from
Matsuyama
270px, Matsuyama City Hall
270px, Ehime Prefectural Capital Building
is the capital city of Ehime Prefecture, on the island of Shikoku, in Japan and is also Shikoku's largest city. , the city had an estimated population of 505,948 in 243,541 h ...
and
Takamatsu
file:Takamatsu City Hall.jpg, 270px, Takamatsu City Hall
file:Takamatsu city center area Aerial photograph.2007.jpg, 270px, Aerial view of Takamatsu city center
file:Takamatsu200910cut.JPG, 270px, View from Yashima to Takashima port
is a capital ...
. There are periodic international charter flights as well.
Sea Travel
Ferries link Shikoku to destinations including Honshu,
Kyushu
is the third-largest island of Japan's Japanese archipelago, four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa Island, Okinawa and the other Ryukyu Islands, Ryukyu (''Nansei'') Ryukyu Islands, Islands ...
, and islands around Shikoku.
See also
*
Geography of Japan
*
Japanese archipelago
The is an archipelago of list of islands of Japan, 14,125 islands that form the country of Japan. It extends over from the Sea of Okhotsk in the northeast to the East China Sea, East China and Philippine Sea, Philippine seas in the southwest al ...
*
Regions of Japan
Japan is often divided into regions, each containing one or more of the country's Prefectures of Japan, 47 prefectures at large. Sometimes, they are referred to as "blocs" (ブロック, ''burokku''), or "regional blocs" (地域ブロック, ' ...
*
Shikoku dialect
References
*
External links
Kitaro Shikoku Peace Bell Project
{{coord, 33, 45, N, 133, 30, E, region:JP_type:isle_scale:2500000, display=title
Japanese archipelago
Islands of Ehime Prefecture
Islands of Kagawa Prefecture
Islands of Kōchi Prefecture
Islands of Tokushima Prefecture