| YEAR | DATE | EVENT | PRIME MINISTER | GOVERNOR |
| 1903 | 12 may | French Protectorate | Xavier Coppolani | |
| 1904 | 18 october | Part of French West Africa colony | ||
| 1920 | 12 january | French colony | Nicolas Jules Henri Gaden | |
| 1926 | 9 november | Albéric Auguste Fournier | ||
| 1928 | 13 january | Alphonse Paul Albert Choteau | ||
| 1929 | 21 november | René Héctor Émile Chazal | ||
| 1931 | 19 june | Gabriel Omer Descemet (I) | ||
| 1933 | 22 june | Louis François Antonin | ||
| 1934 | 7 april | Gabriel Omer Descemet (II) | ||
| 1934 | 5 july | Adolphe Deitte | ||
| 1934 | august | Jean-Baptiste Victor Chazelas (I) | ||
| 1934 | 1 november | Richard Édmond Maurice Édouard Brunot | ||
| 1935 | 15 april | Jean-Baptiste Victor Chazelas (II) | ||
| 1935 | 10 november | Jules Marcel de Coppet | ||
| 1936 | 1 september | Jean Louis Beyries (I) | ||
| 1936 | 24 october | Oswald Durand | ||
| 1938 | 7 august | Charles André Dumas | ||
| 1938 | november | Jean Louis Beyries (II) | ||
| 1944 | 4 may | Christian-Robert-Roger Laigret | ||
| 1945 | 31 july | René Babin | ||
| 1946 | 30 april | Georges Poirier | ||
| 1946 | 27 october | French overseas territory | ||
| 1947 | 19 july | Lucien Eugène Geay | ||
| 1947 | 31 december | Henry Jean Marie de Mauduit | ||
| 1949 | 7 august | Édouard Louis Terrac | ||
| 1950 | 21 september | Jacques Camille Marie Rogué | ||
| 1952 | 25 april | Pierre Messmer | ||
| 1954 | 6 april | Albert Jean Mouragues | ||
| 1955 | 23 june | Jean Paul Parisot | ||
| 1956 | 14 may | Albert Jean Mouragues (II) | ||
| 1958 | 5 october | Henri Joseph Marie Bernard | ||
| 1958 | 28 november | Independent into French Comunity | Moktar Ould Daddah | |
| 1959 | february | Amédée Joseph Émile Jean Pierre Anthonioz |