| Ayguatébia-Talau | Ayguatébia-Talau |
| Ayguesvives | Ayguesvives |
| Aygün Kazımova | Aygun Kazimova |
| Ayherre | Ayherre |
| Ayin | Ayn |
| Aylmer Bourke Lambert | Aylmer Bourke Lambert |
| Aymag | Aymags de Mongolia |
| Ayman al-Zawahiri | Aymán al-Zawahirí |
| aymara | aimara |
| Aymon de Savoie | Aimone de Saboya |
| Ayn | Ain |
| Ayn Rand | Ayn Rand |
| Ayrens | Airan |
| Ayrshire | Ayrshire |
| Ayrton Senna | Ayrton Senna da Silva |
| Ayse | Aize |
| Ayssènes | Essen |
| Aythya | Aythya |
| Ayumi Hamasaki | Ayumi Hamasaki |
| Ayurveda | Āyurveda |
| Ayutthaya | Ayutthaya |
| Ayyavazhi | Ayyavazhi |
| Ayyoubides | Dinastía ayubí |
| AZ | AZ Alkmaar |
| AZ Alkmaar | AZ Alkmaar |
| Az-Zâhir Rukn ad-Dîn Baybars al-Bunduqdari | Baibars |
| Azad Cachemire | Cachemira Azad |
| azalée | azalea |
| Azat-Châtenet | Azat-Châtenet |
| Azathioprine | Azatioprina |
| Azathoth | Azathoth |
| Azay-le-Rideau | Castillo de Azay-le-Rideau |
| Azazel | Azazel |
| Azerables | Azerables |
| Azerbaidjan | Azerbaiyán |
| Azerbaigian | Azerbaiyán |
| Azerbaijan-e-gharbi | Azerbaiyán Occidental |
| Azerbaijan-e-sharghi | Azerbaiyán Oriental |
| Azerbaïdjan | Azerbaiyán |
| azerbaïdjanais | azerbaiyano |
| Azereix | Azereix |
| AZERTY | Teclado AZERTY |
| Azet | Azé |
| Azilien | Aziliense |
| Azilone-Ampaza | Azilone-Ampaza |
| azimut | azimut |
| Azimuth | Acimut |
| Azincourt | Azincourt |
| Azithromycine | Azitromicina |
| Azkoitia | Azcoitia |
| Azolla filiculoides | Azolla |
| azote | nitrógeno |
| azote organique | nitrógeno orgánico |
| Azoture | Azida |
| Azoudange | Azoudange |
| Azov | Azov |
| Azovmash Mariupol | SC Mariupol |
| Azra Akın | Azra Akin |
| Azraël | Azrael |
| Aztlan | Aztlán |
| Aztréonam | Aztreonam |
| Aztèques | Mexica |
| Azua | Azua |
| Azua de Compostela | Azua de Compostela |
| Azuay | Azuay |
| Azul | Azul |
| Azumanga daioh | Azumanga Daioh |
| azur | azul |
| azurite | azurita |
| azuré | azul cielo |
| Azy | Azy |
| azyme | ázimo |
| Azzana | Azzana |
| Azzon Visconti | Azzone Visconti |
| Azé | Azé |
| Azéotrope | Azeótropo |
| azéri | azerbaiyano |
| Azéris | Idioma azerí |
| Azérolier | Crataegus azarolus |
| Açores | Azores |
| aération | ventilación |
| aération de l'eau | aireación de agua |
| aérer | airear |
| aérien | aéreo |
| aérobic | aerobismo |
| aérobiologie | biología del aire |
| aérobiose | aerobiosis |
| aérobique | aeróbico |
| aérodrome | campo de aviación |
