Nagoya Castle (名古屋城, Nagoya-jō) is a Japanese castle located in Nagoya, Japan.

Nagoya Castle was constructed by the Owari Domain in 1612 during the Edo period on the site of an earlier castle of the Oda clan in the Sengoku period. Nagoya Castle was the heart of one of the most important castle towns in Japan, Nagoya-juku, a post station on the Minoji road linking two of the important Edo Five Routes, the Tōkaidō and the Nakasendō. Nagoya Castle became the core of the modern Nagoya and ownership was transferred to the city by the Imperial Household Ministry in 1930. Nagoya Castle was partially destroyed in 1945 during the Pacific War and the reconstruction and repair of the castle has been ongoing since 1957.

Meijō (名城), another shortform way of pronouncing Nagoya Castle (名古屋城), is used for many Nagoya city institutions such as Meijō Park, the Meijō Line of the Nagoya Municipal Subway, and Meijo University, reflecting the cultural influence of this historic structure. The castle has also historically been called Kinjō (金城), which means "Golden Castle", and Kinjo Gakuin University is named after it.