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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1954 | 20 july | Kingdom | King Norodom II Sihanouk (I) | Samdech Penn Nouth (III) |
| 1955 | 26 january | Leng Ngeth | ||
| 1955 | 3 march | king Norodom III Suramarit | ||
| 1955 | 3 october | Prince Norodom II Sihanouk (IV) | ||
| 1956 | 5 january | Oum Chheang Sun (II) | ||
| 1956 | 29 february | Prince Norodom II Sihanouk (V) | ||
| 1956 | 3 april | Khim Tit | ||
| 1956 | 29 july | Prince Norodom II Sihanouk (VI) | ||
| 1956 | 25 october | Sam Yun | ||
| 1957 | 9 april | Prince Norodom II Sihanouk (VII) | ||
| 1957 | 26 july | Sim Var (I) | ||
| 1958 | 11 january | Ek Yi Oun | ||
| 1958 | 17 january | Samdech Penn Nouth (IV) | ||
| 1958 | 29 april | Sim Var (II) | ||
| 1958 | 10 july | Prince Norodom II Sihanouk (VIII) | ||
| 1960 | 3 april | Chuop Hell (I) | ||
| 1960 | 6 april | Prince Sisowath Monireth | ||
| 1960 | 13 april | Chuop Hell (II) | ||
| 1960 | 20 april | Prince Norodom II Sihanouk (II) | Pho Proeung | |
| 1961 | 28 january | Samdech Penn Nouth (V) | ||
| 1961 | 17 november | Prince Norodom II Sihanouk (IX) | ||
| 1962 | 13 february | Nhiek Tioulong | ||
| 1962 | 6 august | Chau Sen Cocsal Chhum | ||
| 1962 | 6 october | Prince Norodom Kanthoul | ||
| 1966 | 25 october | Lon Nol (I) | ||
| 1967 | 1 may | Son Sann | ||
| 1968 | 31 january | Samdech Penn Nouth (VI) | ||
| 1969 | 14 august | Lon Nol (II) | ||
| 1970 | 18 march | Cheng Heng |