| Oituz, Locul de veci al lui nea Costica... (ro) | | | en | 0 |
| Oisterwijk (St. Peter) Roman Catholic Churchyard | | | en | 14 |
| Oiartzun, CEMENTERIO DE OIARTZUN (es) | | | en | 0 |
| Oil Springs, Oil Springs Cemetery | | | en | 0 |
| Oignies Communal Cemetery | | | en | 19 |
| Oisy-le-verger Communal Cemetery | | | en | 4 |
| Oisemont Communal Cemetery | | | en | 4 |
| Oiã, Cemitério de Oiã (pt) | | | en | 0 |
| Oisterwijk Protestant Churchyard | | | en | 1 |
| Oissy Churchyard | | | en | 1 |
| Oiron, Cimetiere (fr) | | | en | 0 |