Tochio Castle

{{short description|Castle ruins in Nagaoka, Japan}}

{{Infobox military structure

| name = Tochio Castle

| nativename-a={{lang|ja|栃尾城}}

| partof =

| location = Nagaoka, Niigata, Japan

| image =Tochio Castle Honmaru ruins from Akiba Park 20170504.jpg

| image_size =

| caption =Tochio Castle

| type = Mountaintop castle

| height =

| ownership = Uesugi clan

| controlledby =

| condition = ruins

| built = 15C

| builder =?

| used =

| materials =

| demolished = 1610

| battles =

| past_commanders = Uesugi Kenshin, Honjō Saneyori, Honjō Hidetsuna

| garrison =

| occupants =

| events =Siege of Tochio
Siege of Otate

| coordinates =

}}

{{nihongo|Tochio Castle|栃尾城|Iino-jō}} was a castle structure in Nagaoka, Niigata, Japan.{{cite web|url=https://www.city.nagaoka.niigata.jp/kankou/rekishi/shiro/tochiojyoato.html |title=栃尾城|publisher=Nagaoka city official|language=Japanese|accessdate=25 July 2019}} The site is located on a 227-meter mountain.{{cite web|URL=http://tochiokankou.jp/tourism/shiroyama.html|title=Tochio Castle|publisher=Tochio Tourist Association|access-date=20 October 2021}} Young Uesugi Kenshin spent five years in the castle.{{cite web|url= https://kojodan.jp/castle/554/ |title=栃尾城|publisher=攻城団|language=Japanese|accessdate=25 July 2019}}{{cite web|url=https://kotobank.jp/word/%E6%A0%83%E5%B0%BE%E5%9F%8E-180157 |title=栃尾城|publisher=コトバンク

|language=Japanese|accessdate=25 July 2019}}