18th Congress

18th Congress may refer to
 * 18th Congress of the All-Union Communist Party (Bolsheviks) (1939)
 * 18th Congress of the Philippines (2019–2022)
 * 18th National Congress of the Chinese Communist Party (2012)
 * 18th National Congress of the Kuomintang (2009)
 * 18th United States Congress (1823–1825)