| Obozinski Ferdinand |
1876 |
| Ocreman Jean |
1884 |
| Ocreman Pierre |
1858 |
| Olbrechts Jean |
1890 |
| Olbrechts Jean Baptiste |
1875 |
| Olbrechts Michel |
1877 |
| Olemans Adeline |
1895 |
| Olemans Héloise |
1887 |
| Olemans Zélie |
1900 |
| Oliviers Adeline |
1923 |
| Oliviers Ferdinand |
1918 |
| Oliviers Norbert |
1917 |
| Olsen Anna |
1890 |
| Ombelets Jacques |
1926 |
| Ongemack Adeline |
1971 |
| Oor Jean Baptiste |
1882 |
| Oor Paulus |
1893 |
| Oorts Frans |
1931 |
| Oosterlinck Charles |
1919 |
| Op de Beeck Auguste |
1907 |
| Op de Beeck Jeanne |
1914 |
| Opdebeeck Pauline |
1887 |
| Opden Bosch Charles |
1895 |
| Op den Bosch Marie |
1927 |
| Orbaen Albert |
1975 |
| Orbaen Auguste |
1918 | |
|
| Orbaen Englebert |
1882 |
| Orbaen Henri |
1893 |
| Orbaen Ide |
1903 |
| Orbaen Leopold |
1964 |
| Orbaen Louis |
1892 |
| Orband Jean-François |
1891 |
| Orban de Xivry Alfred |
1922 |
| Orban de Xivry Charles |
1878 |
| Orban de Xivry Grégoire baron |
1898 |
| Orban de Xivry Stéphanie |
1884 |
| Orts Louise |
1900 |
| Otterbein Anne-Marie |
1921 |
| Otto Albert |
1963 |
| Otto Eugène |
1869 |
| Otto Henri |
1912 |
| Otto Jean-Baptiste |
1874 |
| Otto Jean-François |
1912 |
| Otto Joanna |
1916 |
| Otto Lucie |
1968 |
| Otto Pierre |
1869 |
| Otto Pierre |
1928 |
| Otzer Maria |
1942 |
| Oudman Barbe |
1899 |
| Ouwerx Charles |
1899 |
| Oversteyns Marie-Elisabeth |
1931 | |