The following lists events that happened during 1915 in the Belgian Congo.
| Date | Event | |
|---|---|---|
| Joseph Kasa-Vubu, first president of the Republic of the Congo (Léopoldville), is born in the village of Kuma-Dizi in the Mayombe district. | ||
| Adolphe De Meulemeester is appointed Interim governor of Katanga Province. | ||
| 6 April | Belgians report that they have repelled a German attack north of Lake Kivu. | |
| August 1915 | Germans attack Saisi, from Abercorn. Frederik-Valdemar Olsen sends a battalion under Gaston Heenen to defend Saisi. |