| Sovereign | Birthdate | Reign | Deathdate (if different) | ||
| Began | Ended | ||||
| Leopold I | 1790 | 1831 | 1865 | ||
| Leopold II | 1835 | 1865 | 1909 | ||
| Albert I | 1875 | 1909 | 1934 | ||
| Leopold III | 1901 | 1934 | 1951 | 1983 | |
| Baudouin I | 1930 | 1951 | 1993 | ||
| Albert II | 1934 | 1993 | 2013 | (living) | |
| Philippe I | 1960 | 2013 |