| YEAR | DATE | EVENT | GOVERNOR |
| 1916 | june | Belgian occupation | Charles Henry Marie Ernest Tombeur |
| 1917 | Justin Prudent François Marie Malfeyt | ||
| 1919 | Alfred Frédéric Gérard Marzorati | ||
| 1922 | 20 july | Belgian Trust Territory of Ruanda-Urundi | |
| 1926 | august | Louis Joseph Postiaux | |
| 1930 | july | Charles Henri Joseph Voisin | |
| 1932 | 30 june | Eugène Jacques Pierre Louis Jungers | |
| 1946 | december | Léon Antoine Marie Pétillon | |
| 1952 | Alfred Maria Josephus Ghislencus Claeys-Bouuaert | ||
| 1955 | Jean Paul Harroy |
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| YEAR | DATE | EVENT | GOVERNOR |
| 1959 |
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| YEAR | DATE | EVENT | PRIME MINISTER | GOVERNOR |
| 1961 | 26 january | Joseph Cimpaye | ||
| 1961 | 28 september | Louis Rwagasore | ||
| 1961 | 13 october | Chief André Muhirwa |