Date | Event |
| The Compagnie du Congo pour le Commerce et l'Industrie (CCCI) joins with a group of English investors to formally create the Compagnie du Katanga, which would defend Belgian interests in Katanga Province against British claims. |
| American Presbyterian church in Congo founded, precursor of the Presbyterian Community in Congo. |
9 April 1891 | Royal Order of the Lion is established by King Leopold II of Belgium, awarded for services to the Congo. |
15 April 1891 | Théophile Wahis replaces Camille Coquilhat as vice governor-general |