Events in the year 1921 in Belgium.
Incumbents
Monarch – Albert I
Prime Minister – Henry Carton de Wiart (to 16 December); Georges Theunis (from 16 December)
Events
24 April – Municipal elections
April – Third Solvay Conference held in Brussels
June – Crown Prince Hirohito's official visit to Belgium. 18 September – 10th Gordon Bennett Cup held in Brussels 20 November – Legislative elections (first with limited female suffrage) 27 November – Provincial elections
Publications
Olympic Games Handbook: Containing official records of the seventh Olympiad (New York, American Sports Publishing co.) Émile Cammaerts, Belgium from the Roman Invasion to the Present Day (London, T. Fisher Unwin)
Art and architecture
Buildings
Antwerp Diamond Exchange completed.
Births
21 March – Arthur Grumiaux, violinist (died 1986) 13 April – Joseph Moureau, fighter pilot (died 2020) 7 September – René Derolez, philologist (died 2005)