高野山（こうやさん）是位于日本和歌山县里标高约1,000公尺前后的山群总称。在平安时代的弘仁7年（816年）弘法大师空海在此修行，开创了高野山真言宗，进而创建了同时是日本佛教圣地的总本山金刚峰寺。整个山中的寺院总数约有117间，于平成16年（2004年）7月，被联合国教科文组织登记『纪伊山地的圣地与参拜道』列为世界遗产之一。高野山同时也是金刚峰寺的山号。高野山也是日本东密道场。

高野山同时是安土桃山时代非常著名的流放胜地，许多知名武士都因不同的原因被流放到此度过余生。

Mount Kōya(高野山,Kōya-san) is the name of mountains in Wakayama Prefecture to the south of Osaka. Also, Kōya-san is a modifying word for Kongōbu-ji (金刚峰寺). There is no mountain officially called Kōya-san (高野山) in Japan.

First settled in 819 by the monk Kūkai, Mt. Kōya is primarily known as the world headquarters of the Kōyasan Shingon sect of Japanese Buddhism. Located in an 800 m high valley amid the eight peaks of the mountain (which was the reason this location was selected, in that the terrain is supposed to resemble a lotus plant), the original monastery has grown into the town of Kōya, featuring a university dedicated to religious studies and 120 temples, many of which offer lodging to pilgrims. The mountain is home to the following famous sites: