| Air Force One | Air Force One |
| Air France | Air France |
| Air France-KLM | Air France-KLM |
| Air Minas | Air Minas |
| Air New Zealand | Air New Zealand |
| AirBaltic | AirBaltic |
| Airbus | Airbus |
| Airedaleterrier | Airedale Terrier |
| Aischylos | Esquilo |
| Aisne | Aisne |
| Aitne | Etna |
| Aitor Hernández | Aitor Hernández |
| Aitor Osa | Aitor Osa |
| Aitor Pérez | Aitor Pérez Arrieta |
| Aix | Aix |
| Aix-en-Provence | Aix-en-Provence |
| Aix-les-Bains | Aix-les-Bains |
| Aizoaceae | Aizoaceae |
| AJ Auxerre | Association de la Jeunesse Auxerroise |
| Ajaccio | Ajaccio |
| Ajax | AJAX |
| Ajax Amsterdam | Ajax Amsterdam |
| ajour | al corriente |
| ak | ay |
| Ak-Chin-reservatet | Comunidad India Ak-Chin |
| Akaba | Aqaba |
| Akababugten | Golfo de Aqaba |
| Akacie | Acacia |
| akademiker | académico |
| Akademisk disciplin | Disciplina científica |
| Akademisk grad | Grados académicos |
| Akademos | Academo |
| Akantus | Acanthus |
| Akantus-familien | Acanthaceae |
| Akashi-Kaikyo-broen | Gran Puente de Akashi Kaikyō |
| Akbar | Akbar |
| Akbar Hashemi Rafsanjani | Akbar Hashemi Rafsanjani |
| Akcent | O-Zone |
| akeleje | aguileña |
| Akershus | Akershus |
| Akershus slot | Akershus |
| Aketza Peña | Aketza Peña |
| Akhnaton | Akenatón |
| Akihito af Japan | Akihito |
| akilleshæl | talón de Aquiles |
| akillessene | tendón de Aquiles |
| Akira | Akira |
| Akira Kurosawa | Akira Kurosawa |
| Akira Toriyama | Akira Toriyama |
| Akita | Akita Inu |
| Akiva | Akiva ben Iosef |
| Akkad | Acad |
| akkadisk | acadio |
| Akko | Acre |
| akkompagnatør | acompañante |
| Akkompagnere | Acolitar |
| akkord | acorde |
| akkordeon | acordeón |
| akkumulator | acumulador |
| akkumulere | acumular |
| akkumulering af forurenende stoffer | acumulación contaminante |
| akkusativ | complemento directo |
| akne | acné |
| Akon | Akon |
| Akranes | Akranes |
| akrobat | equilibrista |
| akronym | acrónimo |
| Akropolis | Acrópolis |
| Akrotiri og Dhekelia | Acrotiri y Dhekelia |
| akrylisk | acrílico |
| aks | espiga |
| Aksemagterne | Potencias del Eje en la Segunda Guerra Mundial |
| Aksiom | Axioma |
| Akson | Axón |
| akt | acto |
| Aktie | Acción |
| aktieejer | accionista |
| Aktion | Acción |
| Aktionsforskning | Investigación-acción |
| aktionær | accionista |
