# Liste der Seen in Japan

Diese Liste der Seen in Japan führt alle natürlichen Seen in Japan, die mindestens eine Fläche von einem Quadratkilometer besitzen.
Die Daten basieren auf Angaben des Kokudo Chiriin (Namen und Flächen; 2008) und des Ministeriums für Land, Infrastruktur und Transport (Höhe, Umfang, Tiefe; 2002).
Seen die auf Inseln der Kurilen liegen, die von Russland verwaltet, aber von Japan beansprucht werden, sind kursiv dargestellt.
| Name | Präfektur | Fläche (km²) | Höhe (m) | Umfang (km) | Tiefste Stelle (m) |
| Biwa (琵琶湖) | Shiga | 669,23 | 85 | 241 | 103,8 |
| Kasumigaura (霞ヶ浦) | Ibaraki | 168,22 | 0 | 120 | 7,1 |
| Saroma (サロマ湖) | Hokkaidō (Okhotsk) | 151,59 | 0 | 87 | 19,6 |
| Inawashiro (猪苗代湖) | Fukushima | 103,24 | 514 | 50 | 93,5 |
| Nakaumi (中海) | Shimane, Tottori | 85,68 | 0 | 105 | 17,1 |
| Kussharo (屈斜路湖) | Hokkaidō (Kushiro) | 79,54 | 121 | 57 | 117,5 |
| Shinji (宍道湖) | Shimane | 79,25 | 0 | 47 | 6,0 |
| Shikotsu (支笏湖) | Hokkaidō (Ishikari) | 78,48 | 247 | 40 | 360,1 |
| Tōya (洞爺湖) | Hokkaidō (Iburi) | 70,72 | 84 | 50 | 179,7 |
| Hamana (浜名湖) | Shizuoka | 64,91 | 0 | 114 | 13,1 |
| Ogawara (小川原湖) | Aomori | 62,12 | 0 | 47 | 24,4 |
| Towada (十和田湖) | Aomori, Akita | 61,11 | 400 | 46 | 326,8 |
| Notoro (能取湖) | Hokkaidō (Okhotsk) | 58,20 | 0 | 33 | 23,1 |
| Fūren (風蓮湖) | Hokkaidō (Nemuro) | 59,01 | 0 | 94 | 13,0 |
| Kitaura (北浦) | Ibaraki | 35,04 | 0 | 64 | 7,0 |
| Abashiri (網走湖) | Hokkaidō (Okhotsk) | 32,28 | 0 | 39 | 16,1 |
| Akkeshi (厚岸湖) | Hokkaidō (Kushiro) | 32,31 | 0 | 25 | 11,0 |
| Hachirōgata (八郎潟調整池) | Akita | 27,75 | 0 | 35 | 12,0 |
| Tazawa (田沢湖) | Akita | 25,75 | 249 | 20 | 423,4 |
| Mashū (摩周湖) | Hokkaidō (Kushiro) | 19,22 | 351 | 20 | 211,4 |
| Jūsan (十三湖) | Aomori | 17,82 | 0 | 28 | 1,5 |
| Kutcharo (クッチャロ湖) Ōnuma und Konuma (大沼 und 小沼) | Hokkaidō (Soya) | 13,40 | 0 | 30 | 3,3 |
| Akan (阿寒湖) | Hokkaidō (Kushiro) | 13,25 | 420 | 30 | 44,8 |
| Suwa (諏訪湖) | Nagano | 12,81 | 759 | 17 | 7,6 |
| Chūzenji (中禅寺湖) | Tochigi | 11,90 | 1.269 | 22 | 163,0 |
| Ikeda (池田湖) | Kagoshima | 10,91 | 66 | 15 | 233,0 |
| Hibara (檜原湖) | Fukushima | 10,70 | 822 | 38 | 30,5 |
| Hinuma (涸沼) | Ibaraki | 9,30 | 0 | 20 | 3,0 |
| Inbanuma (印旛沼) | Chiba | 9,43 | 1 | 44 | 1,8 |
| Tōfutsu (涛沸湖) | Hokkaidō (Okhotsk) | 8,19 | 1 | 27 | 2,4 |
| Tōfutsu (東沸湖) | Hokkaidō (Nemuro) | 8,13 | | | |
| Kumihama-wan (久美浜湾) | Kyōto | 7,18 | 0 | 23 | 20,6 |
| Mangokuura (万石浦) | Miyagi | 7,30 | | | |
| Koyama-ike (湖山池) | Tottori | 6,99 | 0 | 18 | 6,5 |
| Ashinoko (芦ノ湖) | Kanagawa | 7,03 | 725 | 19 | 40,6 |
| Yamanaka (山中湖) | Yamanashi | 6,57 | 981 | 14 | 13,3 |
| Tōro (塘路湖) | Hokkaidō (Kushiro) | 6,27 | 8 | 18 | 6,9 |
| Matsukawaura (松川浦) | Fukushima | 6,06 | 0 | 23 | 5,5 |
| Sotonasakaura (外浪逆浦) | Ibaraki, Chiba | 5,93 | 0 | 12 | 23,3 |
| Urumonbetsu (得茂別湖) | Hokkaidō (Nemuro) | 5,80 | | | |
| Kawaguchi (河口湖) | Yamanashi | 5,48 | 831 | 18 | 14,6 |
| Onnetō (温根沼) | Hokkaidō (Nemuro) | 5,72 | 1 | 14 | 6,7 |
| Takahokonuma (鷹架沼) | Aomori | 5,43 | 0 | 22 | 7,0 |
| Inohana (猪鼻湖) | Shizuoka | 5,36 | 0 | 14 | 16,1 |
| Ōnuma (大沼) | Hokkaidō (Oshima) | 5,31 | 129 | 21 | 11,6 |
| Komuke (コムケ湖) | Hokkaidō (Okhotsk) | 4,84 | 1 | 23 | 5,3 |
| Kamo (加茂湖) | Niigata | 4,85 | 0 | 17 | 9,0 |
| Ōnuma (大沼) | Hokkaidō (Sōya) | 4,67 | 1 | 10 | 2,2 |
| Asokai (阿蘇海) | Kyōto | 4,80 | 0 | 16 | 13,0 |
| Motosu (本栖湖) | Yamanashi | 4,70 | 900 | 11 | 121,6 |
| Kuttara (倶多楽湖) | Hokkaidō (Iburi) | 4,70 | 258 | 8 | 148,0 |
| Yūdōnuma (湧洞沼) | Hokkaidō (Tokachi) | 4,43 | | | |
| Nojiri/Fuyō (野尻湖/芙蓉湖) | Nagano | 4,45 | 657 | 14 | 38,3 |
| Toshimoi (年萌湖) | Hokkaidō (Nemuro) | 4,36 | | | |
| Suigetsu (水月湖) | Fukui | 4,18 | 0 | 11 | 33,7 |
| Kahokugata (河北潟) | Ishikawa | 4,20 | 0 | 25 | 4,8 |
| Teganuma (手賀沼) | Chiba | 4,02 | 3 | 37 | 3,8 |
| Tōgōike (東郷池) | Tottori | 4,05 | 0 | 13 | 3,6 |
| Konuma (小沼) | Hokkaidō (Oshima) | 3,81 | | | |
| Akimoto (秋元湖) | Fukushima | 3,62 | | | |
| Shikaribetsu (然別湖) | Hokkaidō (Tokachi) | 3,59 | | | |
| Hichirippunuma (火散布沼) | Hokkaidō (Kushiro) | 3,76 | | | |
| Obuchinuma (尾駮沼) | Aomori | 3,32 | | | |
| Mikata (三方湖) | Fukui | 3,58 | | | |
| Higashibiroku (東ビロク湖) | Hokkaidō (Nemuro) | 3,49 | | | |
| Ushikunuma (牛久沼) | Ibaraki | 3,55 | | | |
| Panketō (パンケ沼) | Hokkaidō (Sōya) | 3,55 | | | |
| Nikishoro (ニキショロ湖) | Hokkaidō (Nemuro) | 3,44 | | | |
| Izunuma (伊豆沼) | Miyagi | 3,31 | | | |
| Naganuma (長沼) | Miyagi | 4,88 | | | |
| Numazawa (沼沢湖) | Fukushima | 2,99 | | | |
| Ichihishinai (一菱内湖) | Hokkaidō (Nemuro) | 2,96 | | | |
| Panketō (パンケトー) | Hokkaidō (Kushiro) | 2,86 | | | |
| Nishibiroku (西ビロク湖) | Hokkaidō (Nemuro) | 2,40 | | | |
| Shibetoronuma (蘂取沼) | Hokkaidō (Nemuro) | 2,83 | | | |
| Usoriyama (宇曽利山湖) | Aomori | 2,68 | | | |
| Shibunotsunai (シブノツナイ湖) | Hokkaidō (Okhotsk) | 2,63 | | | |
| Naibonuma (内保沼) | Hokkaidō (Nemuro) | 2,55 | | | |
| Utonai (ウトナイ湖) | Hokkaidō (Nemuro) | 2,10 | | | |
| Nishinoko (西の湖) | Shiga | 2,15 | | | |
| Kitagata (北潟湖) | Ishikawa, Fukui | 2,16 | | | |
| Saiko (西湖) | Yamanashi | 2,10 | 901 | | 71,7 |
| Poronuma (ポロ沼) | Hokkaidō (Sōya) | 1,97 | | | |
| Ozenuma (尾瀬沼) | Fukushima, Gunma | 1,81 | | | |
| Shirarutoronuma (シラルトロ沼) | Hokkaidō (Kushiro) | 1,72 | | | |
| Shibayamagata (柴山潟) | Ishikawa | 1,92 | | | |
| Yogo (余呉湖) | Shiga | 1,75 | | | |
| Oikamanaenuma (生花苗沼) | Hokkaidō (Tokachi) | 1,54 | | | |
| Aoki (青木湖) | Nagano | 1,73 | | | |
| Ichiyanaginuma (市柳沼) | Aomori | 1,75 | | | |
| Onogawa (小野川湖) | Fukushima | 1,72 | | | |
| Kizaki (木崎湖) | Nagano | 1,69 | | | |
| Keramui (ケラムイ湖) | Hokkaidō (Nemuro) | 1,67 | | | |
| Anenuma (姉沼) | Aomori | 1,57 | | | |
| Tamoginuma (田面木沼) | Aomori | 1,61 | | | |
| Penketō (ペンケ沼) | Hokkaidō (Sōya) | 1,27 | | | |
| Kabutonuma (兜沼) | Hokkaidō (Sōya) | 1,46 | | | |
| Kimonmanuma (キモンマ沼) | Hokkaidō (Nemuro) | 1,44 | | | |
| Rausunuma (ラウス沼) | Hokkaidō (Nemuro) | 1,35 | | | |
| Kugushi (久々子湖) | Fukui | 1,40 | | | |
| Nagazuraura (長面浦) | Miyagi | 1,47 | | | |
| Toyanogata (鳥屋野潟) | Niigata | 1,37 | | | |
| Torinoumi (鳥の海) | Miyagi | 1,35 | | | |
| Chōbushi-See (長節湖) | Hokkaidō (Tokachi) | 1,12 | | | |
| Takkobu (達古武湖) | Hokkaidō (Kushiro) | 1,31 | | | |
| Tōronuma (トウロ沼) | Hokkaidō (Nemuro) | 1,38 | | | |
| Yodaura (与田浦) | Chiba | 1,23 | | | |
| Haruna (榛名湖) | Gunma | 1,24 | | | |
| Sanaru (佐鳴湖) | Shizuoka | 1,13 | | | |
| Unagiike (鰻池) | Kagoshima | 1,20 | | | |
| Tappinuma (田光沼) | Aomori | 1,25 | | | |
| Jinzai (神西湖) | Shimane | 1,14 | | | |
| Kibagata (木場潟) | Ishikawa | 1,13 | | | |
| Uchinuma (内沼) | Miyagi | 1,05 | | | |
| Chimikeppu (チミケップ湖) | Hokkaidō (Okhotsk) | 1,05 | | | |
| Shananuma (紗那沼) | Hokkaidō (Nemuro) | 1,01 | | | |
| Asanainuma (浅内沼) | Akita | 1,04 | | | |
* 1 2 3 4 5 6 auf der von Russland verwalteten Insel Kunashir
* 1 2 3 4 5 6 7 8 9 auf der von Russland verwalteten Insel Iturup