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| Decades: | |||||
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The following lists events that happened during 1921 in the Belgian Congo .
| Date | Event | 
|---|---|
| The Shinkolobwe radium and uranium mine starts production. [1] | |
| Charles Duchesne is appointed deputy governor-general of the province of Équateur. [2] | |
| 30 January | Maurice Lippens replaces Eugène Henry as governor-general | 
| April | Simon Kimbangu launches the Kimbanguism religious movement, and is imprisoned for life by the authorities. [3] | 
| 13 September | Cyrille Adoula, future prime minister of the Republic of the Congo (Léopoldville), is born in Léopoldville. | 
| 15 September | Joseph Iléo, future prime minister of the Republic of the Congo (Léopoldville), is born | 
| October | Martin Rutten (1876–1944) is appointed governor and deputy governor-general of Katanga Province. [2] |