This is a list of aquaria (public aquariums) in Japan. For zoos, see list of zoos in Japan. Also, For worlds, see List of aquaria.

Aquariums are facilities where animals are confined within tanks and displayed to the public, and in which they may also be bred. Such facilities include public aquariums, oceanariums, marine mammal parks, and dolphinariums.

Japan has the largest number of public aquariums per capita in the world.^[1] There are many small public aquariums in Japan and many are not on this list.

Some aquariums that are considered to be of high academic value are, have been designated as registered museums or museum-equivalent designated facilities by the Ministry of Education, Culture, Sports, Science and Technology.^[2]

In addition, large fish tanks are often installed at large commercial facilities, stations, and airport, Large commercial facilities such as Aeon mall, Lalaport, Don Quijote etc, all of which are open to the public for free.

Aichi Prefecture

• Hekinan Seaside Aquarium, Hekinan, Aichi
• Minamichita Beachland Aquarium, Mihama, Aichi
• Port of Nagoya Public Aquarium, Nagoya, Aichi
• Sea Life Nagoya, Nagoya, Aichi
• Takeshima Aquarium, Gamagōri, Aichi

Akita Prefecture

• Oga Aquarium Gao, Oga, Akita

Aomori Prefecture

• Asamushi Aquarium, Aomori, Aomori

Chiba Prefecture

• Sekaiichi chitchana Aquarium, Choshi, Chiba
• Inubōsaki Marine Park, Choshi, Chiba (closed)
• Kamogawa Sea World, Kamogawa, Chiba

Ehime Prefecture

• Nijino mori Park Aquarium Osakanakan (The Aquarium of Shimantogawa River), Matsuno, Ehime
• Nagako Aquarium (in Nagahama high School), Nagahama, Ehime

Fukui Prefecture

• Echizen Matsushima Aquarium, Sakai, Fukui

Fukuoka Prefecture

• Marine World Uminonakamichi, Fukuoka, Fukuoka

Fukushima Prefecture

• Aquamarine Fukushima, Iwaki, Fukushima
• Inawashiro Kingfisher Aquarium, Inawashiro, Fukushima

Gifu Prefecture

• World Freshwater Aquarium, Kakamigahara, Gifu
• Forest Aquarium, Takayama, Gifu

Hiroshima Prefecture

• Miyajima Public Aquarium (Marine Plaza Miyajima), Hatsukaichi, Hiroshima
• Fukuyama University Marine Biocenter Aquarium, Onomichi, Hiroshima
• Mariho Aquarium, Hiroshima, Hiroshima

Hokkaidō

• Otaru Aquarium, Otaru, Hokkaidō
• Wakkanai Noshappu Cold Aquarium, Wakkanai, Hokkaido
• Sun Piaza Aquarium, Sapporo, Hokkaido
• AOAO SAPPORO, Sapporo, Hokkaido
• Sapporo Salmon Museum, Sapporo, Hokkaido
• Shibetsu Salmon Science Museum, Shibetsu, Hokkaido
• Noboribetsu Marine Park Nixe, Noboribetsu, Hokkaido
• kushiro Aquarium Pukupuku, kushiro, Hokkaido
• Chitose Aquarium, Chitose, Hokkaido
• Yama no Aquarium, kitami, Hokkaido
• Muroran Aquarium, Muroran, Hokkaido
• Okhotsk Aquarium, Abashiri, Hokkaido(closed)

Hyōgo Prefecture

• Atoa, Kobe, Hyōgo
• Aqua tojo, Katō, Hyōgo
• Minatoyama Aquarium, Kobe, Hyōgo
• Kobe Suma Aqualife Park, Kobe, Hyōgo
• Kinosaki Marine World, Toyooka, Hyōgo
• Himeji Aquarium, Himeji, Hyōgo
• Kobe School Aquarium AQUA TEXT, kobe, Hyōgo

Ibaraki Prefecture

• Aqua World, Oarai, Ibaraki
• Kasumigaura Aquarium, Kasumigaura, Ibaraki
• Yamagata freshwater park, Yamagata, Ibaraki(closed)

Iwate Prefecture

• Kuji Underground Aquarium and Science Museum Moguranpia, Kuji, Iwate

Ishikawa Prefecture

• Notojima Aquarium, Notojima, Ishikawa

Kagawa Prefecture

• Shikoku Aquarium, Utazu
• New Yashima Aquarium, takamatsu

Kagoshima Prefecture

• Kagoshima Aquarium, Kagoshima
• Amami Ocean Exhibition Hall, Amami Ōshima

Kanagawa Prefecture

• Aburatsubo Marine Park Aquarium, Miura, Kanagawa (closed)
• Aquarium Sagamihara, Sagamihara, Kanagawa
• Hakone-en Aquarium, Hakonemachi, Kanagawa
• kawasaki Aquarium, kawasaki, Kanagawa
• Kitazato Aquarium Lab, Sagamihara, Kanagawa
• Enoshima Aquarium, Fujisawa, Kanagawa
• Yokohama Hakkeijima Sea Paradise, Yokohama, Kanagawa
• Makado Sea Marine Park (in Makado Elementary School), Yokohama, Kanagawa
• Yomiuri Land Seal Pavilion, Kawasaki, Kanagawa
• Yokohama Fortune Aquarium , Yokohama, Kanagawa

Kōchi Prefecture

• Muroto Schoolhouse Aquarium, Muroto, Kōchi
• Katsurahama Aquarium, Kōchi, Kōchi
• Ashizuri Ocean Aquarium, Tosashimizu, Kōchi
• Shimanto River Museum Akitsuio, Shimanto, Kōchi

Kyoto Prefecture

• Kyoto Aquarium, Kyoto
• Hanazono Church Aquarium, Kyoto
• Uocchikan, Miyazu, Kyoto (closed)

Kumamoto Prefecture

• Amakusa Aquarium, Dolphin World, Hondo, Kumamoto
• Sea Donut Aquarium, Kamiamakusa, Kumamoto

Mie Prefecture

• Futami Seaparadise, Ise, Mie^[3]
• Shima Marineland, Shima, Mie(closed)
• Toba Aquarium, Toba, Mie
• AKAME WATERFALLs AQUARIUM, Nabari, Mie

Miyagi Prefecture

• The Ice Aquarium, Kesennuma, Miyagi
• Sendai Umino-Mori Aquarium, Sendai
• Aqua Terrace Nishikigaoka, Sendai

Miyazaki Prefecture

• Oyodo River Study Aquarium, Miyazaki, Miyazaki
• Dolphin Land, Kushima, Miyazaki
• Idenoyama Fresh Water Aquarium, Kobayashi, Miyazaki

Nagano Prefecture

• Alps Azumino National Government Park (Azumino school aquarium), Azumino, Nagano
• Tateshina Amusement Aquarium, Chino, Nagano

Nagasaki Prefecture

• Nagasaki Penguin Aquarium, Nagasaki
• Umi Kirara Saikai National Park Aquarium, Sasebo, Nagasaki
• Mutsugorou Aquarium, Isahaya, Nagasaki

Niigata Prefecture

• Joetsu Aquarium Umigatari, Joetsu, Niigata
• Niigata City Aquarium Marinpia Nihonkai, Niigata, Niigata
• Teradomari Aquarium, Teradomari, Niigata

Nara Prefecture

• Nara kingyo musiam, Nara city, Nara

Ōita Prefecture

• Oita Marine Palace Aquarium Umitamago, Ōita, Ōita

Okayama Prefecture

• Tamano Marine Museum, Tamano, Okayama

Okinawa Prefecture

• Okinawa Churaumi Aquarium, Okinawa
• DMM kariyushi Aquarium, Okinawa

Osaka Prefecture

• Osaka Aquarium Kaiyukan, Osaka
• NIFREL, Osaka
• Osaka Water Museum and Aquarium, Osaka

Saitama Prefecture

• Saitama Aquarium, Hanyu, Saitama

Shiga Prefecture

• Lake Biwa Museum, Kusatsu, Shiga^[4]
• Miyazu Energy Laboratory Aquarium, Kyoto, Shiga

Shimane Prefecture

• Shimane Aquarium AQUAS, Hamada, Shimane
• Shinjiko Nature Museum, GOBIUS, Hirata, Shimane

Shizuoka Prefecture

• Izu Andyland, Kawazu, Shizuoka
• Izu Mito Sea Paradise, Numazu, Shizuoka
• Yogyo Aquarium, Suntō, Shizuoka
• Wotto Hamanako Aquatic Experience Center, Hamamatsu, Shizuoka
• Numazu Deep Sea Aquarium, Numazu, Shizuoka
• Marine Science Museum, Tokai University, Shizuoka, Shizuoka
• Shimoda Floating Aquarium, Shimoda, Shizuoka
• SMART AQUARiUM SHIZUOKA, Shizuoka City, Shizuoka

Tochigi Prefecture

• Nakagawa Aquatic Park, Tochigi, Tochigi

Tokushima Prefecture

• Sea Nature Museum Marine Jam, Kaiyō, Tokushima

Tokyo

• Aqua Park Shinagawa, Minato, Tokyo
• Art Aquarium Museum, Ginza, Tokyo
• Ogasawara_marine_centre, Ogasawara, Tokyo
• Sunshine Aquarium, Toshima, Tokyo
• Tokyo Sea Life Park, Edogawa, Tokyo
• Shinagawa Aquarium, Shinagawa, Tokyo
• Sumida Aquarium, Sumida, Tokyo
• Adachi Park of Living Things, Adachi, Tokyo
• Itabashi Botanical aquarium(at Itabashi Botanical Garden), Itabashi, Tokyo

Toyama Prefecture

• Uozu Aquarium, Uozu, Toyama

Wakayama Prefecture

• Adventure World, Shirahama, Wakayama
• Shirahama Aquarium, Shirahama, Wakayama
• Taiji Whale Museum, Taiji, Wakayama
• Kushimoto Marine Park Center, Kushimoto, Wakayama
• Wakayama Pref. Museum of Natural History, Kainan, Wakayama
• Susami Crustacean Aquarium, Susami, Wakayama^[5]

Yamagata Prefecture

• Kamo Aquarium, Tsuruoka, Yamagata

Yamaguchi Prefecture

• Shimonoseki Municipal Aquarium Kaikyokan, Shimonoseki, Yamaguchi
• Nagisa aquarium, Suō-Ōshima, Yamaguchi

Yamanashi Prefecture

• Fuji Yusui no Sato Aquarium, Oshino, Yamanashi