| Axis of symmetry | Eje de simetría |
| Axis powers | Potencias del Eje en la Segunda Guerra Mundial |
| Axis powers of World War II | Potencias del Eje en la Segunda Guerra Mundial |
| Axl Rose | Axl Rose |
| axle | eje |
| Axon | Axón |
| Axonometric projection | Axonometría |
| Axum | Aksum |
| Axumite Kingdom | Aksum |
| Axé music | Axé |
| Aya Hirano | Aya Hirano |
| Aya Hisakawa | Aya Hisakawa |
| Aya Ueto | Aya Ueto |
| Ayaan Hirsi Ali | Ayaan Hirsi Ali |
| Ayabaca Province | Provincia de Ayabaca |
| Ayacucho | Ayacucho |
| Ayacucho Partido | Ayacucho |
| Ayacucho Quechua | Quechua ayacuchano |
| Ayacucho Region | Departamento de Ayacucho |
| Ayad Allawi | Iyad Allawi |
| Ayahuasca | Banisteriopsis caapi |
| Ayasegawa Yumichika | Yumichika Ayasegawa |
| ayatollah | Ayatolah |
| Ayauhteotl | Ayauhtéotl |
| Aydin Province | Provincia de Aydin |
| Aydın | Provincia de Aydın |
| Aydın Province | Provincia de Aydın |
| aye | voto a favor |
| Ayen | Ayen |
| Ayent | Ayent |
| Ayerbe | Ayerbe |
| Ayeyarwady Division | Ayeyarwady |
| Ayeyarwady River | Río Irawadi |
| Aygun Kazimova | Aygun Kazimova |
| Ayherre | Ayherre |
| Ayin | Ayn |
| Aylmer Bourke Lambert | Aylmer Bourke Lambert |
| Ayman al-Zawahiri | Aymán al-Zawahirí |
| Ayman Nour | Ayman Nour |
| Aymara | aimara |
| Aymara language | Idioma aimara |
| Aymaraes Province | Provincia de Aymaraes |
| Aymaran languages | Lenguas aru |
| Ayn Rand | Ayn Rand |
| Ayo Technology | Ayo Technology |
| Ayopaya Province | Ayopaya |
| Ayr | Ayr |
| Ayrens | Airan |
| Ayrie | Nido |
| Ayrshire | Ayrshire |
| Ayrshire cattle | Ayrshire |
| Ayrton Senna | Ayrton Senna da Silva |
| Aysen | Aisén |
| Aysén Region | XI Región de Aisén del General Carlos Ibáñez del Campo |
| Aythya | Aythya |
| Aythyinae | Anatinae |
| Ayumi Hamasaki | Ayumi Hamasaki |
| Ayurveda | Āyurveda |
| Ayutthaya | Ayutthaya |
| Ayutthaya historical park | Ayutthaya |
| Ayutthaya Kingdom | Reino de Ayutthaya |
| Ayutthaya Province | Ayutthaya |
| Ayyavazhi | Ayyavazhi |
| Ayyubid dynasty | Dinastía ayubí |
| AZ | AZ Alkmaar |
| Azad Kashmir | Cachemira Azad |
| Azadi Stadium | Estadio Azadi |
| Azadi Tower | Torre Azadi |
| azalea | azalea |
| Azande | Azande |
| Azathioprine | Azatioprina |
| Azathoth | Azathoth |
| Azawakh | Azawakh |
| Azay-le-Rideau | Castillo de Azay-le-Rideau |
| Azazel | Azazel |
| Azeotropic distillation | Destilación azeotrópica |
| Azerbaidzhan | Azerbaiyán |
| Azerbaijan | Azerbaiyán |
| Azerbaijan Airlines | Azerbaijan Airlines |
| Azerbaijan in the Eurovision Song Contest | Azerbaiyán en el Festival de la Canción de Eurovisión |
| Azerbaijan national football team | Selección de fútbol de Azerbaiyán |
| Azerbaijan SSR | República Socialista Soviética de Azerbaiyán |
| Azerbaijani | azerí |
| Azerbaijani Cluster | azerí |
| Azerbaijani language | Idioma azerí |
| Azerbaijani people | Idioma azerí |
| Azerbaijanian | Idioma azerí |
| Azeri | azerbaiyano |
| AZERTY | Teclado AZERTY |
| Azgayin Zhoghov | Asamblea Nacional |
| Azide | Azida |
| Azilian | Aziliense |
| azimuth | azimut |
| Azimuth mounting | Montura acimutal |
| Azincourt | Azincourt |
| Azione Cattolica | Acción Católica |
| Azithromycin | Azitromicina |
| Azkar Lugo FS | Azkar Lugo FS |
| Azkoitia | Azcoitia |
| Aznar I Galíndez | Aznar I Galíndez |
| Aznar II Galíndez | Aznar II Galíndez |
| Azo compound | Azoderivado |
| Azo coupling | Acoplamiento diazoico |
| Azole | Azol |
| Azolla | Azolla |
| Azolla filiculoides | Azolla |
| Azores | Azores |
| Azores Bullfinch | Pyrrhula murina |
| Azores Is | Azores |
| Azores Liberation Front | Frente de Libertação dos Açores |
| Azotropic distillation | Destilación azeotrópica |
| Azov | Azov |
| Azov campaigns | Campañas de Azov |
| Azovmash Mariupol | SC Mariupol |
| Azra Akın | Azra Akin |
| Azrael | Azrael |
| Aztec | azteca |
| Aztec calendar | Calendario azteca |
| Aztec mythology | Mitología mexica |
| Aztec sun stone | Piedra del Sol |
| Aztec Triple Alliance | Triple Alianza |
| Aztekium | Aztekium |
| Aztlán | Aztlán |
| AzTV | Azərbaycan Televiziya |
| Azuay Province | Azuay |
| Azuchi-Momoyama period | Período Azuchi-Momoyama |
| Azuero Peninsula | Península de Azuero |
| Azul Partido | Azul |
| Azuloscurocasinegro | AzulOscuroCasiNegro |
| Azumanga Daioh | Azumanga Daioh |
| azure | azul |
