Hachimanyama-jo Castle was a yamajiro (a castle built atop a mountain to take advantage of the mountain's topography) constructed near Gamo County of Omi Province (present Omihachiman City, Shiga Prefecture).
八幡山城(はちまんやまじょう)は、近江国蒲生郡（現在の滋賀県近江八幡市）に存在した山城。