42 Islands of the Sea of Japan

Awashima (粟島) is an island in the Sea of Japan. The island is located approximately 30 kilometres (19 mi) west of the city of Murakami in northern Niigata Prefecture.

The Empress Eugénie Archipelago, commonly known as the Eugénie Archipelago, is an archipelago in Peter the Great Gulf in the Sea of Japan, along the southern coast of Primorsky Krai, Russia. The population of the archipelago is 6,810 (2005), and is administratively part of the city of Vladivostok.

Fumi-shima (経島) is an islet 180 metres (590 ft) from the shore near Izumo, Shimane, Japan. It is a nesting place for around 5,000 Black-tailed Gulls each Spring. The islet used to have a shrine dedicated to Homomisaki Jinja. Only the shrine priests were allowed to visit the island so the gulls settled virtually undisturbed.

Furugelm Island is an island in the southwest part of Peter the Great Gulf in the Sea of Japan, 110 km southwest of Vladivostok. It belongs to Khasansky District of Primorsky Krai, Russia.

Hegurajima (舳倉島) is a small island located in the Sea of Japan at the far north of Ishikawa Prefecture, Japan. It lies approximately 47 km from the northern tip of Noto Peninsula., and is administratively part of Amamachi township within the city of Wajima. Hegurajima is approximately 2 km by 1 km in size and can easily be walked around in less than an hour.

Hokkaido is the second largest island of Japan and the comprises the largest and northernmost prefecture. The Tsugaru Strait separates Hokkaido from Honshu, and the two islands are connected by the undersea railway Seikan Tunnel.

Jeju Island is the largest island in South Korea, located in the Jeju Province. The island lies in the Korea Strait, below the Korean Peninsula, south of the South Jeolla Province. The island contains a natural world heritage site, the Jeju Volcanic Island and Lava Tubes. Jeju has a moderate climate; even in winter, the temperature rarely falls below 0 °C (32 °F). Jeju is a popular holiday destination and a sizable portion of the economy relies on tourism and economic activity from its civil/naval base.

Jukdo (죽도/竹島) is a small island adjacent to Ulleungdo, South Korea, in the Sea of Japan. It was formerly also known as Jukseodo (죽서도/竹嶼島) in Korea and China and as Boussole Rock or Ou-san in Europe. It lies 2 km (1 mi) east of Ulleungdo, and is the largest island in the group apart from Ulleungdo itself. In 2004, one family of three members was living on the island.

Kanmurijima (冠島) is an island in the Sea of Japan administered under Maizuru in Kyoto Prefecture. It is about 2 km from Kutsujima, a similar smaller island. A Nakatsu reef is located just midway between islands. A breeding ground for the streaked shearwater, the Kanmurijima island was designated as a Japanese natural monument in 1924.

Ko Island or Kojima is an uninhabited island in the Sea of Japan, 23 kilometres (14 mi) southwest of the mainland portion of the town of Matsumae and is the southernmost point in Hokkaidō. It is under the administration of the town of Matsumae in Oshima Subprefecture in Hokkaidō, Japan. To distinguish Ko Island from other islands with the same name, it is sometimes known as Oshima Ko Island or Matsumae Ko Island .

Kutsujima is a volcanic island in the Sea of Japan, 2.5 km from the coast of the Kyoto Prefecture in Japan. Kutsujima Island is administered as part of Maizuru city. The island consist of two islets - the smaller northern is Tsurigane-jima (釣鐘島) or Meshima (女島) and larger southern is Bōshima (棒島) or Kojima (小島)

Kyūroku-jima (久六島) is a group of islets in the Sea of Japan about 30 kilometers (19 mi) west of the Japanese main island of Honshu. It is administered as part of the town of Fukaura in Aomori Prefecture and is the prefecture's westernmost point. The islets are the peaks of a submarine volcano.

The Liancourt Rocks are a group of small islets in the Sea of Japan. While South Korea controls the islets, its sovereignty over them is contested by Japan.

Mitsukejima (見附島) is an uninhabited island in Suzu, Ishikawa, Japan. Because of its shape, it is also known as Gunkanjima , which is also the common name given to Hashima Island in Nagasaki Prefecture.

Moneron Island, is a small island off Sakhalin Island. It is currently administered as a part of Russia.

Nishinoshima is a town located on the island of Nishinoshima, in Oki District, Shimane Prefecture, Japan. As of June 2013, the town had an estimated population of 2,923 and a population density of 52 persons per km². The total area was 55.98 km2 (22 sq mi).

Notojima is a volcanic island in the Nanao Bay (七尾湾) portion of the Sea of Japan, less than 500 meters off the coast of the Ishikawa prefecture in Japan. Notojima Island is administered as part of Nanao city. The two bridges connecting Notojima to the mainland trisect Nanao Bay into Nanao-North, Nanao-West and Nanao-Nambu bays. The island's highest peak is Mount Yomurazuka 196.8 m (646 ft). The island has both elementary and middle schools.

Oki Islands is an archipelago in the Sea of Japan, the islands of which are administratively part of Oki District, Shimane Prefecture, Japan. The islands have a total area of 346.1 square kilometres (133.6 sq mi). Only four of the around 180 islands are permanently inhabited. Much of the archipelago is within the borders of Daisen-Oki National Park. Due to their geological heritage, the Oki Islands were designated a UNESCO Global Geopark in September 2013.

Okushiri Island is an island in Hokkaidō, Japan. It has an area of 142.97 square kilometres (55.20 sq mi). The town of Okushiri and the Hiyama Prefectural Natural Park encompass the entire island. It has many pastures, beech tree forests, and a rocky coastline. There are two elementary schools, one junior high school, and one senior high school. Okushiri currently has no colleges or universities.

Oryukdo is group of islands located in Yongho-dong, Nam-gu, Busan, South Korea. The name reflects the fact that the island group can consist of either five or six islands, depending on the current tides.

Ōshima (大島) is an uninhabited island in the Sea of Japan, 50 kilometers (31 mi) to the west from Matsumae town and therefore the westernmost point of Hokkaido. It is part of the town of Matsumae in Oshima Subprefecture in Hokkaido, Japan. To distinguish Ōshima from other islands with the same name, it is sometimes known as Oshima Ōshima (渡島大島) or Matsumae Ōshima (松前大島).

Popov Island is an island in Eugénie de Montijo Archipelago. It lies in Peter the Great Gulf, 20 km to the south of Zolotoy Rog between Reyneke and Russky Islands. It is named after admiral Andrey Alexandrovich Popov. Area is 12,4 km2. Population: 1316 (2005) in two settlements. Administratively the island is under Vladivostok's jurisdiction.

Putyatin Island is an island in Strelok Bay, near 50 km east of Vladivostok and 35 km west of Nakhodka. It named after Admiral Yevfimy Putyatin. The island is under Fokino city administration.

Rebun Island is an island in the Sea of Japan off the northwestern tip of Hokkaidō, Japan. The island sits 50 kilometres (31 mi) off the coast of Hokkaidō. Rebun stretches 29 kilometres (18 mi) from north to south and 8 kilometres (5.0 mi) from east to west. The island covers approximately 80 square kilometres (31 sq mi). Rebun Island is located 10 kilometres (6.2 mi) northwest of Rishiri Island, and the two islands are separated by the Rebun Channel.

Reyneke Island is an island in the Eugénie Archipelago within the Peter the Great Gulf of the Sea of Japan. It is administratively part of the city of Vladivostok in Primorsky Krai, Russia, and is located 25 kilometres south of the city center. Reyneke Island has an area of approximately 4.6 square kilometres and a population of 23 (2005), making it the smallest of four inhabited islands of Primorsky Krai both by area and population. Most residents live in the island's single settlement of the same named located on the northern coast.

Rikord Island is an island in Peter the Great Gulf located 30 km (19 mi) to the south of Zolotoy Rog and 4 km (2 mi) to the south of Reyneke Island. It was named after admiral Pyotr Rikord.

Rimsky-Korsakov Archipelago is a group of six small islands and few kekurs in Peter the Great Gulf of Sea of Japan under administration of Khasansky District. Islands are located approximately 70 km (43 mi) to southwest of Vladivostok.

Rishiri Island is a high island in the Sea of Japan off the coast of Hokkaido, Japan. Administratively the island is part of Hokkaido Prefecture, and is divided between two towns, Rishiri and Rishirifuji. The island is formed by the cone-shaped extinct volcanic peak of Mount Rishiri. Along with Rebun Island and the coastal area of the Sarobetsu Plain, Rishiri forms the Rishiri-Rebun-Sarobetsu National Park. The main industries of Rishiri are tourism and fishing. The island is about 63 kilometres (39 mi) in circumference and covers 183 square kilometres (71 sq mi). The island has a population of 5,102 residents.

Russky Island is an island in Peter the Great Gulf in the Sea of Japan, in Primorsky Krai, Russia. It is the largest island in the Eugénie Archipelago, separated from the Muravyov-Amursky Peninsula immediately to the north by the Eastern Bosphorus, and is one of the four islands in Primorsky Krai that are permanently inhabited with a population of 5360 (2010).

Sado Island is an island located in the eastern part of the Sea of Japan, under the jurisdiction of Sado City, Niigata Prefecture, Japan, with a coastline of 262.7 kilometres (163.2 mi). In October 2017, Sado Island had a population of 55,212 people. Sado Island covers an area of 854.76 km2 (330.02 sq mi), and is the second largest island after Okinawa Island outside of the four main islands of Japan, excluding the disputed Southern Kurils. The shortest distance between Sado Island and Honshu is 32 km (20 mi). The highest peak on Sado Island is Mount Kinpoku, with an elevation of 1,172 m (3,845 ft).

Shiraishi Island is an island in the Inland Sea of Japan and is considered part of the municipality of Kasaoka, Okayama Prefecture. It is one of six inhabited islands in the Kasaoka Islands, a chain of islands most easily reached from the port city of Kasaoka on Japan's main island, Honshū.

Shkot Island is an island in the Eugénie Archipelago within the Peter the Great Gulf of the Sea of Japan. The uninhabited island is one of the five large islands in the archipelago, with an area of 2.6 square kilometres and its highest point at 146 metres above sea level. Shkot Island is located 0.5 kilometres directly south of Russky Island, to which it is connected by a low thin isthmus, making it one of only two islands in the archipelago accessible to the mainland by foot.

Skrebtsova Island, popularly known as Kovrizhka ("honey-cake"), is an island in the Amur Bay, Sea of Japan, 2 km north-west of the coast of Vladivostok. Named in 1863 in honor of M. L. Skrebtsova who participated in hydrographic research of Peter the Great.

Takashima is a volcanic island in the Sea of Japan, 12 km from the coast of the Shimane prefecture in Japan. Takashima Island is administered as part of Masuda, Shimane Prefecture. Takashima takes its name, meaning "High Island" from its steep cliffs and mountains. The island was inhabited since at least 15th century, but was completely depopulated twice - in 1711 and 1975, when all inhabitants left the island following a natural disasters. Currently it is used as a fishing spot.

Teuri Island is an island in the Sea of Japan 30 km west of Haboro port in Haboro, Tomamae District, in the Rumoi Subprefecture in Hokkaido. The Island, along with neighboring Yagishiri island on its east side, belongs to the town of Haboro in Rumoi Subprefecture. The island has an area of 5.5 square kilometers, with 12 km of coastline, and the population is 317 people as of March, Heisei 20 (2008). It is said that the name of the island comes from the Ainu language, where the name could either be interpreted as “fish back” or “leg.”

Tobishima (飛島), is an inhabited island located in the Sea of Japan, administered part of Sakata, Yamagata Prefecture, Japan. The island, 2.75 km² in area, had 275 inhabitants as of 2005. The island has no airport, and access is normally by ferry to the city of Sakata on the mainland. The islanders are dependent mainly on commercial fishing and seasonal tourism.

Tomb of Munmu of Silla is an underwater tomb, the 30th king of Silla, in Gyeongju, North Gyeongsang Province, South Korea. This is Historic Site No. 158, also known as Daewang-am.

Tsunoshima (角島) is an island located in the Sea of Japan. Located in the north west of Yamaguchi Prefecture, it is a part of Shimonoseki city. The island has an area of 4.1 square kilometers (1.6 sq mi) and has a coastline of 17.1 kilometres (10.6 mi). The island consists primarily of basalt, and is a part of the Kita-Nagato Kaigan Quasi-National Park. As of 28 August 2008, the population of Tsunoshima stood at 907.

Ulleungdo is a South Korean island 120 km (75 mi) east of the Korean Peninsula, formerly known as the Dagelet Island or Argonaut Island in Europe; also known as Yuling-dao in Chinese, and Utsuryo-to (鬱陵島) in Japanese. Volcanic in origin, the rocky steep-sided island is the top of a large stratovolcano which rises from the seafloor, reaching a maximum elevation of 984 metres (3,228 ft) at Seonginbong Peak. The island is 9.5 kilometres (5.9 mi) in length and 10 kilometres (6.2 mi) in width; it has an area of 72.86 km2 (28.13 sq mi). It has a population of 10,426 inhabitants.

Umashima is a volcanic island in the Sea of Japan, 2 km from the coast of the Shimane prefecture in Japan, just off the port Hamada, Shimane Prefecture. Umashima takes its name, meaning "Horse Island" from the fact what it was once used to be a grazing ground for horses.

Ushi Island is an islet in the Eugénie Archipelago within the Peter the Great Gulf of the Sea of Japan. It is administratively part of the city of Vladivostok in Primorsky Krai, Russia. The uninhabited island is located 160 metres north-west of Russky Island, in the Amur Bay section of the gulf along the southern coast of Primorsky Krai. The area of Ushi island is 0.1 hectares, with dimensions of about 45 by 22 metres, and its highest point is 6 metres. It is almost devoid of vegetation, and consists of two rocks which connected narrow and low isthmus. There are shoals 4.8 to 5.2 metres near the island. It is a popular spot for fish and birds alike. Owing to its size however, only a limited number of birds can roost on the island.

Yagishiri Island is a small, sparsely populated island in the Sea of Japan, located 23 kilometres (14 mi) northwest of Haboro Bay in Haboro, Hokkaido. The island, along with neighboring Teuri Island, belongs to the town of Haboro in Rumoi Subprefecture. The island is noted for its dense forests, and fully two-thirds of Yagishiri Island remains forested.