The Ying Tung Natatorium (simplified Chinese: 英东游泳馆; traditional Chinese: 英東游泳館; pinyin: Yīngdōng Yóuyǒngguǎn) is a swimming venue located in the Olympic Sports Centre in Beijing, China with a seating capacity of 4,852. It was upgraded for the 2008 Summer Olympics and expanded to 44,635 square metres. It hosted Olympic water polo matches and the swimming part of the modern pentathlon event.