- Japanese:小田原城(Odawara-jou)
- Type:Flatland-Mountain
- Founder:Omori Yoriharu
- Year:15C
- Demolished:1871
- Reconstructed:1960,1971,1997(Mogi-tenshu,Gates)
- Location:Sagami province
The base of Odawara castle was a mansion of Kobawakawa clan in Kamakura period. The Kobayakawa was replaced by Omori Yoriharu in Muromachi period. Odawara castle was built on a mountain during the rule of Omori clan. 1495, Ise Shinkuro took over Odawara and the castle was expanded by the 5 generations of Hojo clan. The castle blocked invasions by Uesugi Kenshin(1561) and Takeda Shingen(1569).