| Oelwein, Woodlawn Cemetery | | | en | 0 |
| Oeuilly Communal Cemetery | | | en | 5 |
| Oeiras, Cemitério (pt) | | | en | 0 |
| Oeiras, Cemitério Novo (pt) | | | en | 0 |
| Oeiras do Pará, Cemitério de Oeiras do Pará (pt) | | | en | 0 |
| Oegstgeest Protestant Churchyard | | | en | 17 |
| Oermingen Churchyard | | | en | 1 |
| Oederan, Friedhof (de) | | | en | 0 |
| Oetzen, Friethof Oetzen (de) | | | en | 0 |
| Oederquart, Friedhof Oederquart (de) | | | en | 0 |
| Oetzen, Friedhof Süttorf (de) | | | en | 0 |
| Oerel, Friedhof Oerel (de) | | | en | 0 |