| orchestrate | orquestar |
| orchestration | orquestación |
| Orchestre de Paris | Orquesta de París |
| orchid | orquídea |
| Orchidaceae | Orchidaceae |
| Orchidales | Orchidales |
| Orchis papilionacea | Orchis papilionacea |
| Orchis provincialis | Orchis provincialis |
| Orchis simia | Orchis simia |
| Orchomenos | Orcómeno |
| Orchomenus | Orcómeno |
| Orcoyen | Orcoyen |
| Orcrist | Orcrist |
| Orcus | Orcus |
| ordain | ordenar |
| ordain priest | ordenar |
| ordeal | tribulación |
| Ordeliness | Orden |
| order | limpiar |
| order in advance | reservar |
| Order of Alcántara | Orden de Alcántara |
| Order of Attorneys of Brazil | Orden de Abogados del Brasil |
| Order of Australia | Orden de Australia |
| Order of Aviz | Orden de Avis |
| Order of Calatrava | Orden de Calatrava |
| Order of Charles III and Saint Fernando | Orden de Carlos III |
| Order of Christ | Orden de Cristo |
| Order of Dobrzyń | Orden de Dobrin |
| Order of Friars Minor Capuchin | Orden de los Hermanos Menores Capuchinos |
| Order of Glory | Orden de la Gloria |
| Order of Kutuzov | Orden de Kutuzov |
| Order of Lenin | Orden de Lenin |
| Order of Merit | Orden de Mérito del Reino Unido |
| Order of Montesa | Orden de Montesa |
| Order of Montjoie | Orden de Montjoie |
| Order of Poor Ladies | Clarisas |
| Order of Saint Benedict | Orden de San Benito |
| Order of Saint Lazarus | Caballeros de San Lázaro |
| Order of Saint Michael | Orden de San Miguel |
| Order of Santiago | Orden Militar de Santiago |
| Order of St Michael and St George | Orden de San Miguel y San Jorge |
| Order of Suvorov | Orden de Suvorov |
| Order of the Badge of Honor | Orden de la Insignia de Honor |
| Order of the Bath | Orden de Bath |
| Order of the Blessed Virgin Mary of Mercy | Mercedarios |
| Order of the British Empire | Orden del Imperio Británico |
| order of the day | agenda |
