This is an incomplete list of castles in Japan, and focuses on those with some historical notability. Five of Japan's castles (Hikone, Himeji, Inuyama, Matsue and Matsumoto) are National Treasures.

A

• Agena Castle, Uruma, Okinawa
• Aizuwakamatsu Castle (Tsuruga Castle), Aizuwakamatsu, Fukushima
• Akashi Castle, Akashi, Hyōgo
• Akō Castle, Akō, Hyōgo
• Amagasaki Castle, Amagasaki, Hyōgo
• Aoba Castle, Sendai, Miyagi
• Aya Castle, Aya, Miyazaki
• Azuchi Castle, Azuchi, Shiga (see Azuchi-Momoyama period)

B

• Beru Castle, Amami, Kagoshima
• Bitchu Matsuyama Castle, Takahashi, Okayama
• Bitchu Takamatsu Castle, Okayama, Okayama

C

• Chibana Castle, Okinawa, Okinawa
• Chihaya Castle, Chihayaakasaka, Osaka
• Chinen Castle, Chinen, Okinawa

E

• Echizen-Fuchū Castle, Echizen, Fukui
• Echizen Ōno Castle, Ōno, Fukui
• Edo Castle (Imperial Palace), Tokyo (Tōkyo)

F

• Fukuchiyama Castle, Fukuchiyama, Kyoto
• Fukui Castle, Fukui, Fukui
• Fukui Castle, Ibaraki, Osaka
• Fukuoka Castle, Fukuoka, Fukuoka
• Fukushima Castle, Fukushima, Fukushima
• Fukushima Castle, Kiso, Nagano
• Fukuyama Castle (Hisamatsu Castle), Fukuyama, Hiroshima
• Funai Castle, Ōita, Ōita
• Fushimi Castle (Momoyama Castle), Kyoto (see Azuchi-Momoyama period)

G

• Gassantoda Castle, Yasugi, Shimane
• Gifu Castle (Inabayama Castle), Gifu, Gifu
• Goeku Castle, Okinawa, Okinawa
• Gujō Hachiman Castle, Gujō, Gifu
• Gushikawa Castle (Itoman), Itoman, Okinawa
• Gushikawa Castle (Kume), Kumejima, Okinawa

H

• Hachigata Castle, Yorii, Saitama
• Hachinohe Castle, Hachinohe, Aomori
• Hachiōji Castle, Hachiōji, Tokyo
• Hadano Castle, Hadano, Kanagawa
• Hagi Castle, Hagi, Yamaguchi
• Hakumai Castle, Matsuzaka, Mie
• Hamamatsu Castle, Hamamatsu, Shizuoka
• Hara Castle, Minamishimabara, Nagasaki
• Hataya Castle, Yamanobe, Yamagata
• Hayashi Castle, Matsumoto, Nagano
• Hiji Castle (ruins), Hiji, Ōita
• Hikone Castle, Hikone, Shiga
• Himeji Castle, Himeji, Hyōgo, World Heritage Site
• Hinoe Castle, Minamishimabara, Nagasaki
• Hirado Castle, Hirado, Nagasaki
• Hirosaki Castle, Hirosaki, Aomori
• Hiroshima Castle, Hiroshima, Hiroshima
• Hoshizaki Castle, Nagoya, Aichi

I

• Ichigoyama Castle, Yoshii, Gunma
• Ichijōdani Castle, Fukui, Fukui
• Iga Ueno Castle, Iga, Mie
• Iha Castle, Uruma, Okinawa
• Imabari Castle, Imabari, Ehime
• Ina Castle, Kozakai, Aichi
• Inohana Castle, Chiba, Chiba
• Inuyama Castle, Inuyama, Aichi
• Itami Castle, Itami, Hyōgo
• Iwabitsu Castle, Higashiagatsuma, Gunma
• Iwakuni Castle, Iwakuni, Yamaguchi
• Iwamura Castle, Ena, Gifu
• Iwasaki Castle, Nisshin, Aichi
• Iwayadō Castle, Ōshū, Iwate
• Izena Castle, Izena, Okinawa
• Izushi Castle, Izushi, Hyōgo

K

• Kagoshima Castle, Kagoshima, Kagoshima
• Kakegawa Castle, Kakegawa, Shizuoka
• Kakunodate Castle, Kakunodate, Akita
• Kameyama Castle, Kameoka, Kyoto
• Kameyama Castle, Kameyama, Mie
• Kami-Akasaka Castle, Chihayaakasaka, Osaka
• Kamiizumi Castle, Yamanashi Prefecture
• Kaminokuni Castle, Kaminokuni, Hokkaido
• Kaminoyama Castle, Kaminoyama, Yamagata
• Kanayama Castle, Ōta, Gunma
• Kanazawa Castle, Kanazawa, Ishikawa
• Kannonji Castle, Azuchi, Shiga
• Kanō Castle, Gifu, Gifu
• Karakawa Castle, Goshogawara, Aomori
• Karasawa Castle, Sano, Tochigi
• Karatsu Castle, Karatsu, Saga
• Kasugayama Castle, Jōetsu, Niigata
• Katsuren Castle, Uruma, Okinawa
• Kawagoe Castle, Kawagoe, Saitama
• Kawate Castle, Gifu, Gifu
• Ki castle, Sōja, Okayama
• Kihara Castle, Inashiki District, Ibaraki
• Kikko Castle, Kagoshima, Kagoshima
• Kikuchi Castle, Kikuchi, Kumamoto
• Kishiwada Castle, Kishiwada, Osaka
• Kitanosho Castle, Fukui, Fukui
• Kitsuki Castle, Kitsuki, Ōita
• Kiyosu Castle, Kiyosu, Aichi
• Kōchi Castle, Kōchi, Kōchi
• Kōfu Castle, Kōfu, Yamanashi
• Kokura Castle, Kitakyushu, Fukuoka
• Komakiyama Castle, Komaki, Aichi
• Komine Castle (Shirakawa Castle), Shirakawa, Fukushima
• Komoro Castle, Komoro, Nagano
• Kōriyama Castle, Yamatokōriyama, Nara
• Kubota Castle, Akita, Akita
• Kumamoto Castle, Kumamoto, Kumamoto
• Kunimine Castle, Kanra, Gunma
• Kuniyoshi Castle, Mihama, Fukui
• Kurono Castle, Gifu, Gifu Prefecture
• Kurume Castle, Kurume, Fukuoka
• Kururi Castle, Kimitsu, Chiba
• Kushima Castle, Ōmura, Nagasaki
• Kuwabara Castle, Suwa, Nagano
• Kuwana Castle, Kuwana, Mie
• Katsurayama Castle, Susono, Shizuoka

M

• Marugame Castle, Marugame, Kagawa
• Maruoka Castle, Maruoka, Fukui
• Matsue Castle, Matsue, Shimane
• Matsukura Castle, Takayama, Gifu
• Matsumae Castle, Matsumae, Hokkaido
• Matsumori Castle, Izumi, Miyagi
• Matsumoto Castle, Matsumoto, Nagano
• Matsushiro Castle, Nagano, Nagano
• Matsuyama Castle, Matsuyama, Ehime
• Matsuyama Castle, Takahashi, Okayama
• Matsuzaka Castle, Matsusaka, Mie
• Mihara Castle Mihara, Hiroshima
• Minakuchi Castle, Kōka, Shiga
• Minato Castle, Tsuchizaki, Akita, Akita
• Minowa Castle, Takasaki, Gunma
• Mito Castle, Mito, Ibaraki
• Mitsumine Castle, Sabae, Fukui
• Miyao Castle site, Miyajima, Hiroshima
• Mizusawa Castle, Oshu, Iwate
• Momoyama Castle, see Fushimi Castle
• Morioka Castle (Kozukata Castle), Morioka, Iwate
• Motegi Castle, Motegi, Tochigi
• Muro Castle, Toyohashi, Aichi

N

• Nagahama Castle, Nagahama, Shiga
• Nagamori Castle, Gifu, Gifu Prefecture
• Nagaoka Castle, Nagaoka, Niigata
• Nagashino Castle, Shinshiro, Aichi
• Nagayama Castle, Hita, Ōita
• Nago Castle, Nago, Okinawa
• Nagoya Castle, Nagoya, Aichi
• Nagoya Castle, Karatsu, Saga
• Nagurumi Castle, Minakami, Gunma
• Nakagusuku Castle, Kitanakagusuku, Okinawa
• Nakatsu Castle, Nakatsu, Ōita
• Nakijin Castle, Nakijin, Okinawa
• Nanao Castle, Nanao, Ishikawa
• Nanzan Castle, Itoman, Okinawa
• Ne Castle, Hachinohe, Aomori
• Nedo Castle, Abiko, Chiba
• Negoya Castle, Otaki, Chiba
• Nihonmatsu Castle, Nihonmatsu, Fukushima
• Nijō Castle, Kyoto, World Heritage Site
• Nirayama Castle, Izunokuni, Shizuoka
• Nirengi Castle, Toyohashi, Aichi
• Nishikawa Castle, Toyohashi, Aichi
• Noda Castle, Aichi Prefecture

O

• Obama Castle, Obama, Fukui Prefecture
• Obama Castle, Iwashiro, Fukushima Prefecture
• Obi Castle, Nichinan, Miyazaki
• Odani Castle, Kohoku, Shiga Prefecture
• Odawara Castle, Odawara, Kanagawa
• Ōgaki Castle, Ōgaki, Gifu
• Ōgo Castle, Ōgo, Gunma
• Ōtawara Castle, Ōtawara, Tochigi
• Ōita Castle, Ōita, Ōita
• Oka Castle (ja), Taketa, Ōita
• Okayama Castle, Okayama, Okayama
• Okazaki Castle, Okazaki, Aichi
• Omi Hachiman Castle, Ōmihachiman, Shiga
• Onomichi Castle, Onomichi, Hiroshima
• Osaka Castle, Osaka
• Oshi Castle, Gyōda, Saitama
• Otaki Castle, Otaki, Chiba
• Oyama Castle, Haibara District, Shizuoka
• Ōzato Castle, Nanjō, Okinawa
• Ōzu Castle, Ōzu, Ehime

S

• Saga Castle, Saga, Saga
• Sagiyama Castle, Gifu, Gifu Prefecture
• Saiki Castle, Saiki, Ōita
• Sakura Castle, Sakura, Chiba
• Sakurabora Castle, Gero, Gifu
• Sano Castle, Sano, Tochigi
• Sarukake Castle, Akitakata, Hiroshima
• Sarukake Castle, Kurashiki, Okayama
• Sasayama Castle, Sasayama, Hyōgo
• Satowara Castle, Miyazaki, Miyazaki
• Sawayama Castle, Hikone, Shiga
• Sekiyado Castle, Noda, Chiba
• Senshu Castle, Senshu, Osaka
• Shakujii castle, Nerima, Tokyo
• Shibata Castle, Shibata, Niigata
• Shichinohe Castle, Kamikita District, Aomori
• Shikizan Castle
• Shimabara Castle, Shimabara, Nagasaki
• Shimo-Akasaka Castle, Senshu, Osaka
• Shimotsui Castle, Kurashiki, Okayama
• Shinpu Castle, Nirasaki, Yamanashi
• Shirakawa Castle, Shirakawa, Fukushima
• Shiroishi Castle, Shiroishi, Miyagi
• Shizugatake Castle, Shizugatake, Omi
• Shoryuji Castle, Nagaokakyō, Kyoto
• Shuri Castle, Naha, Okinawa
• Sumoto Castle, Sumoto, Hyōgo
• Sunomata Castle, Ōgaki, Gifu
• Sunpu Castle, Shizuoka, Shizuoka

T

• Tahara Castle, Tahara, Aichi
• Taka Castle, Matsuzaka, Mie
• Takada Castle, Jōetsu, Niigata
• Takamatsu Castle, Takamatsu, Kagawa
• Takamori Castle, Usa, Ōita
• Takaoka Castle, Takaoka, Toyama
• Takasaki Castle, Takasaki, Gunma
• Takashima Castle, Suwa, Nagano
• Takatenjin Castle, Kakegawa, Shizuoka
• Takatori Castle, Takatori, Nara
• Takayama Castle, Takayama, Gifu
• Takeda Castle, Asago, Hyōgo
• Takenoya Castle, Gamagori, Aichi
• Taki-no-jō Castle, Tokorozawa, Saitama
• Tamagusuku Castle, Tamagusuku, Okinawa
• Tamanawa Castle, Kamakura, Kanagawa
• Tanaka Castle, Fujieda, Shizuoka
• Tatebayashi Castle, Tatebayashi, Gunma
• Tateyama Castle, Tateyama, Chiba
• Tatsuno Castle, Tatsuno, Hyōgo
• Tobiyama Castle, Utsunomiya, Tochigi
• Tokushima Castle, Tokushima, Tokushima
• Tomigusuku Castle, Tomigusuku, Okinawa
• Tomioka Castle, Reihoku, Kumamoto
• Tomo Castle, Fukuyama, Hiroshima
• Tottori Castle, Tottori, Tottori
• Toyama Castle, Toyama, Toyama
• Toyoda Castle, Joso, Ibaraki
• Tsu Castle, Tsu, Mie
• Tsuchiura Castle, Tsuchiura, Ibaraki
• Tsuruga Castle, Tsuruga, Fukui
• Tsurumaru Castle, Kagoshima, Kagoshima
• Tsutsujigasaki yakate, Kōfu, Yamanashi
• Tsuwano Castle, Tsuwano, Shimane
• Tsuyama Castle, Tsuyama, Okayama

U

• Uchi Castle, Kagoshima, Kagoshima
• Ueda Castle, Ueda, Nagano
• Uegusuku Castle (Kume), Kumejima, Okinawa
• Uegusuku Castle (Tomigusuku), Tomigusuku, Okinawa
• Uehara Castle, Chino, Nagano
• Ueno Castle, Iga, Mie
• Urado Castle, Kōchi, Kōchi
• Urasoe Castle, Urasoe, Okinawa
• Usuki Castle, Usuki, Ōita
• Uto Castle, Uto, Kumamoto
• Utsunomiya Castle, Utsunomiya, Tochigi
• Uwajima Castle, Uwajima, Ehime
• Uzuki Castle, Matsuyama, Ehime

W

• Wakayama Castle, Wakayama, Wakayama
• Washi Castle, Oyama, Tochigi

Y

• Yagami Castle, Sasayama, Hyōgo
• Yamada Castle, Onna, Okinawa
• Yamagata Castle, Yamagata, Yamagata
• Yamanaka Castle, Mishima, Shizuoka
• Yanagawa Castle, Yanagawa, Fukuoka
• Yatsushiro Castle, Yatsushiro, Kumamoto
• Yodo Castle, Kyoto
• Yokote Castle, Yokote, Akita
• Yonago Castle, Yonago, Tottori
• Yonezawa Castle, Yonezawa, Yamagata
• Yononushi Castle, Wadomari, Kagoshima
• Yoshida Castle, Toyohashi, Aichi
• Yuzuki Castle, Matsuyama, Ehime

Z

• Zakimi Castle, Yomitan, Okinawa
• Zeze Castle, Ōtsu, Shiga