1840 in China

Events from the year 1840 in China.

Incumbents

 * Daoguang Emperor (20th year)

Viceroys

 * Viceroy of Zhili — Qishan then Nergingge
 * Viceroy of Min-Zhe — Deng Tingzhen then Yan Botao
 * Viceroy of Huguang — Yutai
 * Viceroy of Shaan-Gan — Hūsungge then Nergingge then Hūsungge then Enteheng'e
 * Viceroy of Liangguang — Deng Tingzhen then Lin Zexu then Yiliang then Qishan
 * Viceroy of Yun-Gui — Guiliang
 * Viceroy of Sichuan — Gioro-Baoxing
 * Viceroy of Liangjiang — Chen Luan then Deng Tingzhen then IIibu

Ongoing

 * Opium War