| an | un |
| an abundance of | una gran cantidad de |
| An Affair to Remember | An Affair to Remember |
| An American in Paris | An american in Paris |
| An American Prayer | An American Prayer |
| An American Werewolf in London | Un hombre lobo americano en Londres |
| An American Werewolf in Paris | Un hombre lobo americano en París |
| An Cafe | Antic Cafe |
| An Elephant Makes Love to a Pig | Un elefante hace el amor con una cerdita |
| An emia | Anemia |
| An encampment | Castrum |
| An Essay Concerning Human Understanding | Ensayo sobre el entendimiento humano |
| An Essay on the Principle of Population | Ensayo sobre el principio de la población |
| An esthesia | Anestesia |
| An Exceptionally Simple Theory of Everything | Una teoría del todo excepcionalmente simple |
| an expectant mother | una futura madre |
| An Inconvenient Truth | Una verdad incómoda |
| An interview with Jimbo Wales | Entrevista a Jimbo Wales |
| An Lushan | An Lushan |
| An Officer and a Gentleman | An Officer and a Gentleman |
| An Shi Rebellion | Rebelión de An Lushan |
| An sich | Noúmeno |
| An Unfinished Life | Una vida por delante |
| Ana Beatriz Barros | Ana Beatriz Barros |
| Ana Claudia Michels | Ana Claudia Michels |
| Ana de Mendoza e de la Cerda | Ana de Mendoza de la Cerda |
| Ana Guevara | Ana Gabriela Guevara |
| Ana Ivanović | Ana Ivanovic |
| Ana Layevska | Ana Layevska |
| Ana Lucia Cortez | Ana Lucía Cortez |
| Ana Lucía Cortez | Ana Lucía Cortez |
| Ana María | Mélida Anaya Montes |
| Ana Obregón | Ana Obregón |
| Ana Palacio | Ana Palacio |
| Ana Urkijo | Ana Urquijo Elorriaga |
| Ana y los lobos | Ana y los lobos |
| Anaa | Anaa |
| Anabantoidei | Anabantoidei |
| Anabaptism | Anabaptismo |
| Anabaptist | anabaptista |
| Anabar | Anabar |
| Anabar River | Anabar |
| anabasine | anabasina |
| anabasis | anábasis |
| Anabel Medina Garrigues | Anabel Medina |
| Anabisetia | Anabisetia |
| anabolic | anabólico |
| anabolism | anabolismo |
| Anabranch | Bifurcación de un río |
| Anacardiaceae | Anacardiaceae |
| Anacardium | Anacardium |
| anachronism | anacronismo |
| anachronistic | anacrónico |
