The largest islands of Japan: top 20 by area (GSI, 2025)
The top 3 according to 14 votes from people: Shikoku · Kyushu · Amami Ōshima. (Updated Jun 3, 2025.)
The 20 largest islands of Japan by area according to the Geospatial Information Authority of Japan (as of 1 January 2025). After the four main islands of Honshu, Hokkaido, Kyushu and Shikoku come Iturup and Kunashir in the disputed Northern Territories, Okinawa Island and Sado.
Automatically translated (original in 日本語). See the original
Top 20
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1
Shikoku
18,296.23 km². 4 prefectures.
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2
Kyushu
36,782.36 km². 7 prefectures.
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3
Amami Ōshima
712.41 km². Kagoshima.
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4
Awaji
592.44 km². Hyōgo; the largest island in the Seto Inland Sea.
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5
Iturup (Etorofu)
3,166.64 km². Hokkaido; one of the Northern Territories disputed with Russia. Japan's northernmost point.
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6
Yakushima
504.25 km². Kagoshima.
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7
Fukue
326.36 km². Nagasaki (Gotō Islands).
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8
Tokunoshima
247.85 km². Kagoshima.
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9
Honshu
227,938.36 km². Main island; 1 metropolis, 2 urban prefectures and 31 prefectures.
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10
Hokkaido
77,982.36 km². Hokkaido.
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11
Kunashir (Kunashiri)
1,489.27 km². Hokkaido; one of the Northern Territories disputed with Russia.
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12
Okinawa Island
1,208.44 km². Okinawa.
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13
Sado
854.81 km². Niigata; the largest island in the Sea of Japan.
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14
Tsushima
695.74 km². Nagasaki.
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15
Amakusa Shimoshima
574.95 km². Kumamoto.
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16
Tanegashima
443.67 km². Kagoshima.
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17
Iriomote
289.62 km². Okinawa.
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18
Shikotan
247.65 km². Hokkaido; one of the Northern Territories disputed with Russia.
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19
Dōgo (Oki Islands)
241.53 km². Shimane.
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20
Amakusa Kamishima
225.85 km². Kumamoto.
How is this ranking ordered? By people's votes: each ▲ adds a point and each ▼ takes one away. Anyone can vote and add what is missing.
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