| | Prefecture | AddedJcastle | City | AddedJcastle |
|---|
| Aburakawa Nobue Yashiki | Yamanashi Prefecture | 2022 | Fuefuki | 2022 |
| Ahoyama Castle | Shiga Prefecture | 2024 | Otsu | 2024 |
| Aida Yakata | Nagano Prefecture | 2022 | Matsumoto | 2022 |
| Aika Yashiki | Shizuoka Prefecture | 2025 | Iwata | 2025 |
| Aiki Castle (Minochi) | Nagano Prefecture | 2020 | Nagano | 2020 |
| Aimiyamamonomi Fort | Nagano Prefecture | 2022 | Tatsuno | 2022 |
| Ainuta Fort | Yamanashi Prefecture | 2022 | Nirasaki | 2022 |
| Aizu Wakamatsu Castle | Fukushima Prefecture | 1999 | Aizu Wakamatsu | 1999 |
| Akagi Kita Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 |
| Akagi Minami Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 |
| Akagi Yakata | Nagano Prefecture | 2021 | Matsumoto | 2021 |
| Akahori Castle (Ise) | Mie Prefecture | 2025 | Yokkaichi | 2025 |
| Akaiwa Castle | Aichi Prefecture | 2025 | Toyohashi | 2025 |
| Akasaka Jin'ya | Aichi Prefecture | 2023 | Toyokawa | 2023 |
| Akashi Castle | Hyogo Prefecture | 2007 | Akashi | 2007 |
| Akashibu Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 |
| Akasu Castle (Ina) | Nagano Prefecture | 2020 | Komagane | 2020 |
| Akatsuka Castle | Tokyo | 2020 | Tokyo | 2020 |
| Akayama Jin'ya | Saitama Prefecture | 2023 | Kawaguchi | 2023 |
| Akazawa Yakata | Nagano Prefecture | 2022 | Matsumoto | 2022 |
| Akechi Castle | Gifu Prefecture | 2025 | Ena | 2025 |
| Akechi Jin'ya | Gifu Prefecture | 2025 | Ena | 2025 |
| Akechi Osayama Castle | Gifu Prefecture | 2021 | Kani | 2021 |
| Aki Castle | Kochi Prefecture | 2013 | Aki City | 2013 |
| Akiba Fort (Azumi) | Nagano Prefecture | 2023 | Hakuba | 2023 |
| Akiba Fort (Ina) | Nagano Prefecture | 2021 | Tatsuno | 2021 |
| Akita Castle | Akita Prefecture | 2012 | Akita City | 2012 |
| Akiyama Yakata | Yamanashi Prefecture | 2023 | Minami-Alps | 2023 |
| Akiyoshi Fort | Nagano Prefecture | 2023 | Matsumoto | 2023 |
| Akizuki Castle | Fukuoka Prefecture | 2009 | Asakura | 2009 |
| Akizuki Domain South Detached Palace | Fukuoka Prefecture | 2020 | Asakura | 2020 |
| Ako Castle | Hyogo Prefecture | 2009 | Ako | 2009 |
| Akozu Castle | Akita Prefecture | 2016 | Yurihonjo | 2016 |
| Akutagawasan Castle | Osaka | 2013 | Takatsuki | 2013 |
| Amabiki Castle | Nagano Prefecture | 2022 | Takayama | 2022 |
| Amaga Castle | Miyazaki Prefecture | 2012 | Takaoka-cho | 2012 |
| Amagasaki Castle | Hyogo Prefecture | 2013 | Amagasaki | 2013 |
| Amagata Castle | Shizuoka Prefecture | 2025 | Mori | 2025 |
| Amanari Castle | Yamanashi Prefecture | 2023 | Fujikawa | 2023 |
| Amari Yakata | Yamanashi Prefecture | 2022 | Nirasaki | 2022 |
| Amemiya Yashiki | Yamanashi Prefecture | 2022 | Fuefuki | 2022 |
| Ametoya Castle | Nagano Prefecture | 2021 | Matsumoto | 2021 |
| Amidadou Castle (Omi) | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 |
| Amidagamine Castle (Yamashiro) | Kyoto | 2022 | Kyoto | 2022 |
| Amino Shingozaemon Yashiki | Yamanashi Prefecture | 2022 | Kōshū | 2022 |
| Amino Yashiki | Yamanashi Prefecture | 2022 | Kōshū | 2022 |
| Anjou Jin'ya | Aichi Prefecture | 2023 | Anjō | 2023 |
| Annaka Castle | Gunma Prefecture | 2018 | Annaka | 2018 |
| Ano Yakata | Shizuoka Prefecture | 2023 | Numazu | 2023 |
| Anrakuji Yakata | Nagano Prefecture | 2021 | Azumino | 2021 |
| Ansho Castle | Aichi Prefecture | 2009 | Anjo | 2009 |
| Anshouko Castle | Aichi Prefecture | 2023 | Anjō | 2023 |
| Aoiyama Castle | Fukui Prefecture | 2023 | Obama | 2023 |
| Aoki Castle (Azumi) | Nagano Prefecture | 2021 | Ômachi | 2021 |
| Aoki Castle (Sakata) | Shiga Prefecture | 2022 | Maibara | 2022 |
| Aono Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 |
| Aoyagi Castle | Nagano Prefecture | 2016 | Chikuhokumura | 2016 |
| Aoyagi Yakata | Nagano Prefecture | 2022 | Chikuhoku | 2022 |
| Aoyama Castle | Saitama Prefecture | 2015 | Ogawamachi | 2015 |
| Aoyama Castle (Nagato) | Yamaguchi Prefecture | 2021 | Shimonoseki | 2021 |
| Aoyama Castle (Omi) | Shiga Prefecture | 2021 | Higashi-Oumi | 2021 |
| Aoyama Yashiki (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 |
| Ara Castle (Ina) | Nagano Prefecture | 2022 | Ina | 2022 |
| Ara Castle (Murakami Clan Fort Network) | Nagano Prefecture | 2021 | Ueda | 2021 |
| Aragaito Fort | Nagano Prefecture | 2020 | Matsumoto | 2020 |
| Arahorinaiki Yashiki | Nagano Prefecture | 2023 | Nagano | 2023 |
| Arai Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 |
| Araihara Castle | Nagano Prefecture | 2023 | Takayama | 2023 |
| Araino Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 |
| Arako Castle | Aichi Prefecture | 2020 | Nagoya | 2020 |
| Arashi Castle | Nagano Prefecture | 2020 | Shiojiri | 2020 |
| Aratame Castle | Yamagata Prefecture | 2023 | Sakata | 2023 |
| Arato Castle | Nagano Prefecture | 2008 | Chikuma | 2008 |
| Aratoshou Castle | Nagano Prefecture | 2021 | Chikuma | 2021 |
| Arayama Castle | Ishikawa Prefecture | 2019 | Nakanoto | 2019 |
| Arikoyama Castle | Hyogo Prefecture | 2013 | Toyooka | 2013 |
| Aruga Castle | Nagano Prefecture | 2020 | Suwa | 2020 |
| Asaba Castle | Gunma Prefecture | 2016 | Kanra | 2016 |
| Asada Castle (Chikuma) | Nagano Prefecture | 2020 | Matsumoto | 2020 |
| Asahara Yakata | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 |
| Asahi Castle (Chikuma) | Nagano Prefecture | 2019 | Asahi | 2019 |
| Asahi Castle (Minochi) | Nagano Prefecture | 2021 | Nagano | 2021 |
| Asahi Castle (Owari) | Aichi Prefecture | 2019 | Owari-Asahi | 2019 |
| Asahi Moated Settlement | Aichi Prefecture | 2024 | Kiyosu | 2024 |
| Asahiyama Castle | Nagano Prefecture | 2021 | Nagano | 2021 |
| Asahiyama Castle (Kai) | Yamanashi Prefecture | 2022 | Hokuto | 2022 |
| Asaka Castle (Chikuma) | Nagano Prefecture | 2021 | Chikuhoku | 2021 |
| Asakura Yakata | Fukui Prefecture | 2023 | Fukui | 2023 |
| Asama Palace | Nagano Prefecture | 2021 | Matsumoto | 2021 |
| Asama Yakata | Nagano Prefecture | 2020 | Matsumoto | 2020 |
| Asano Castle | Aichi Prefecture | 2025 | Ichinomiya | 2025 |
| Ashigara Castle | Shizuoka Prefecture | 2010 | Oyama | 2010 |
| Ashikaga Masauji Yakata | Saitama Prefecture | 2023 | Kuki | 2023 |
| Ashikagashi Yakata | Tochigi Prefecture | 2007 | Ashikaga | 2007 |
| Ashimori Jin'ya | Okayama Prefecture | 2022 | Okayama | 2022 |
| Ashinoya Jin'ya | Aichi Prefecture | 2023 | Kōta | 2023 |
| Asonuma Castle | Tochigi Prefecture | 2017 | Sano | 2017 |
| Asou Castle (Mikawa) | Aichi Prefecture | 2024 | Okazaki | 2024 |
| Asouko Castle (Mikawa) | Aichi Prefecture | 2024 | Okazaki | 2024 |
| Asukayama Castle | Tokyo | 2022 | Tokyo | 2022 |
