| YEAR | DATE | EVENT | GOVERNOR |
| 1887 | 21 october | German protectorate | |
| 1888 | 14 april | Part of German Marshall Islands | |
| 1906 | 1 april | Part of German New Guinea | |
| 1914 | 4 august | Australian occupation | Charles Rufus Marshall Workman |
| 1917 | Geoffrey Whistler Bingham Smith-Rewse | ||
| 1920 | 17 december | Australia Trust administration | |
| 1921 | june | Thomas Griffiths | |
| 1927 | june | William Augustus Newman | |
| 1933 | january | Rupert Clare Garsia | |
| 1938 | november | Frederick Royden Chalmers | |
| 1942 | 26 august | Japan occupation | Hisayuki Soeda |
| 1945 | 13 september | Australian Trust administration | J.L.A. Kelly |
| 1945 | 1 november | Mark Ridgway | |
| 1949 | august | Harold Hastings Reeve | |
| 1949 | november | Robert Stanley Richards | |
| 1953 | january | John Keith Laurence | |
| 1953 | december | K.A. Read | |
| 1954 | july | Reginald Sylvester Leydin (I) | |
| 1958 | may | John Preston White | |
| 1962 | Reginald Sylvester Leydin (II) | ||
| 1966 | april | Leslie Dudley King |