高山, meaning "tall mountain(s)", may refer to:
Mandarin Chinese reading Gāoshān:
- Gaoshanzu, the name used in the People's Republic of China to refer to Taiwan aborigines
- Courtesy name of Taiwan-based 20th-century Taoist religious leader Wang Hao-te
- Guqin piece by Spring and Autumn period or Warring States period musician Bo Ya
Cantonese Chinese reading Gōusāan
- Ko Shan Terrace, residential estate in Taikoo Shing, Hong Kong
- Ko Shan Road Park, an urban park
Korean reading Gosan
- Ko San, South Korean astronaut
Japanese kun-yomi Takayama
- Takayama, Gifu, city in Gifu Prefecture, Japan
- Takayama Main Line, train line running between Gifu and Toyama, Japan
- Takayama, Gunma, village in Agatsuma District, Gunma Prefecture, Japan
- Takayama, Nagano, village in Kamitakai District, Nagano Prefecture, Japan
Vietnamese reading Cao Sơn
- Commune Cao Son, district Anh Son, province Nghe An
- Commune Cao Son, district Bach Thong, province Bac Kan
- Commune Cao Son, district Da Bac, province Hoa Binh
- Commune Cao Son, district Luong Son, Hoa Binh province
- Commune Cao Son, district Muong Khuong, province Lao Cai.
- The names of many mountain gods in Vietnam, god Cao Sơn.