東山, meaning "eastern mountain(s)", may refer to:
Mandarin Chinese reading Dōngshān (also in simplified characters 东山): Dongshan County, Zhangzhou, Fujian, People's Republic of China Dongshan Island, location of the Chinese Civil War Battle of Dongshan Island Dongshan District, Guangzhou, Guangdong, People's Republic of China Dongshan District, Hegang, Heilongjiang, People's Republic of China Dongshan District, Jieyang, Guangdong, People's Republic of China Dongshan District, Tainan, Taiwan, Republic of China Dongshan District, Urumqi, Xinjiang, People's Republic of China Shi Dongshan (1902–1955), Chinese film director
Cantonese Chinese reading Dūngsāan: Tung Shan (mountain), mountain in Hong Kong Yi Tung Shan, mountain in Hong Kong Sunset Peak (大東山), mountain in Hong Kong Tung Shan Mansion, building in Ko Shan Terrace, Taikoo Shing, Hong Kong
Korean reading Dongsan: Pen name of South Korean politician Yun Chi-Young Dongsan Station, Deokjin-gu, Jeonju, Jeollabuk-do, South Korea
Japanese on-yomi Tōsan or kun-yomi Higashiyama, as a placename: Higashiyama-chō, Chikusa-ku, Nagoya, Japan Higashiyama, Iwate, former town in Iwate, Japan Higashiyama-ku, Kyoto, Japan Higashiyama period Higashiyama Line, Nagoya Municipal Subway System, Japan Higashiyama Station (Kyoto), Japan Higashiyama Station (Hokkaidō), Japan Higashiyama Station (Nara), Japan Tōsandō, old Japanese geographical region Tōkai–Tōsan dialect
Japanese kun-yomi Higashiyama, as a name: Emperor Higashiyama (1675–1710), 113th Emperor of Japan Kaii Higashiyama (1908–1999), 20th-century Japanese artist. Noriyuki Higashiyama, member of J-pop group Shonentai