| abstrakcja | abstração |
| Abstrakcjonizm | Arte abstrata |
| Abstrakcyjny typ danych | TAD |
| abstrakt | abstração |
| abstynencja | abstinência |
| abstynent | abstêmio |
| absurd | absurdo |
| absurdalny | absurdo |
| absurdyzm | absurdismo |
| absynt | absinto |
| Abtsgmünd | Abtsgmünd |
| Abu al-Fida | Abul Fida |
| Abu Bakr | Abu Bakr |
| Abu Gosh | Abu Ghosh |
| Abu Gurab | Abu Gurab |
| Abu Mena | Abu Mena |
| Abu Musab al-Zarkawi | Abu Musab al-Zarqawi |
| Abu Nidal | Abu Nidal |
| Abu Roasz | Abu Roach |
| Abu Simbel | Abu Simbel |
| Abu Zabi | Abu Dhabi |
| Abudża | Abuja |
| Abwehra | Abwehr |
| aby | de modo que |
| Abydos | Abido |
| Abzac | Abzac |
| abzymy | abzima |
| Abère | Abère |
| AC Ajaccio | Athletic Club Ajaccien |
| AC Cars | AC |
| AC Cesena | Associazione Calcio Cesena |
| AC Mantova | Associazione Calcio Mantova |
| AC Pistoiese | Pistoiese |
| AC Siena | Associazione Calcio Siena |
| Acadian Driftwood | The Band |
| Académica Coimbra | Associação Académica de Coimbra - Organismo Autónomo de Futebol |
| Acanthoscurria geniculata | Acanthoscurria geniculata |
| Acanthosis nigricans | Acantose nigricans |
| Acapulco | Acapulco |
| Acarígua | Acarigua |
| Accelerated Graphics Port | Accelerated Graphics Port |
| Access Control List | Access Control List |
| Accolay | Accolay |
| Accons | Acon |
| Accous | Accous |
| Accursius | Francesco Accursio |
| Ace of Base | Ace of Base |
| acefalia | acefalia |
| Aceh | Aceh |
| Acer | Acer |
| acerola | acerola |
| Acerra | Acerra |
| acetaldehyd | acetaldeído |
| acetamid | acetamida |
| aceton | acetona |
| acetylen | acetileno |
| Acetylocholina | Acetilcolina |
| ACF Fiorentina | ACF Fiorentina |
| ach | ah |
| Achab | Acab |
| Achacy | Acácio |
| Achacy Mniejszy | Santo Acácio |
| Achaja | Acaia |
| Achajowie | Aqueus |
| Achberg | Achberg |
| Achemenes | Aqueménes |
| Achemenidzi | Aquemênidas |
| Achenheim | Achenheim |
| Achern | Achern |
| Achernar | Achernar |
| Acheron | Aqueronte |
| Achille Webo | Pierre Webó |
| Achilles | Aquiles |
| Achitofel | Aitofel |
| Achmad Kadyrow | Akhmad Kadirov |
| Achmim | Akhmim |
| achondroplazja | acondroplasia |
| Achoris | Hakor |
| Achslach | Achslach |
| Achstetten | Achstetten |
| Achères | Achères |
| Acid Drinkers | Acid Drinkers |
| Acid house | Acid |
| Acigné | Acigné |
| Acireale | Acireale |
| Acis | Olho |
| Aclens | Aclens |
| Aclou | Aclou |
| Acomys | Acomys spinosissimus |
| Acon | Acon |
| Aconcagua | Aconcágua |
| Acorn Computer Group | Acorn Computers |
| ACPI | ACPI |
| Acquarossa | Acquarossa |
| Acquaviva | Acquaviva |
| Acqueville | Acqueville |
| Acqui Terme | Acqui Terme |
| Acquigny | Acquigny |
| Acquis communautaire | Adquirido comunitário |
| Acrab | Acrab |
| Acre | Acre |
| Acri | Acri |
| Acrux | Acrux |
| Action directe | Ação direta |
| ActionScript | ActionScript |
| Active Directory | Active Directory |
| Active Server Pages | ASP |
| Acy-Romance | Acy-Romance |
| Acyklowir | Aciclovir |
| Acyloglicerole | Triacilglicerol |
| Aczinowie | Achém |
| Acácio | Acácio Cordeiro Barreto |
| AD | AD |
| ad hoc | ad hoc |
| Ad-Aware | Ad-Aware |
| Ad-Dakahlija | Ad Daqahliyah |
| Ad-Dauha | Doha |
| Ada | Ada |
| Ada Lovelace | Ada Lovelace |
| ADAC | ADAC |
| Adachi | Adachi |
| Adad | Adad |
| Adadnirari I | Adad-nirari I |
| Adadnirari II | Adad-nirari II |
| Adadnirari III | Adad-nirari III |
| Adaloald | Adaloaldo |
| Adam | Adão |
| Adam Clayton | Adam Clayton |
| Adam Czerniaków | Adam Czerniakow |
| Adam Darski | Nergal |
| Adam de la Halle | Adam de la Halle |
| Adam i Ewa | Adão e Eva |
| Adam Joseph Maida | Adam Joseph Maida |
| Adam Kadmon | Adam Kadmon |
| Adam Kazimierz Czartoryski | Adam Kazimierz Czartoryski |
| Adam Levine | Adam Levine |
| Adam Małysz | Adam Małysz |
| Adam Mickiewicz | Adam Mickiewicz |
| Adam Opel AG | Opel |
| Adam Sandler | Adam Sandler |
| Adam Savage | Adam Savage |
| Adam Smith | Adam Smith |
| Adam Weishaupt | Adam Weishaupt |
| Adam z Bremy | Adão de Bremen |
| Adamawa | Adamaoua |
| Adams | Adams |
| Adamstown | Adamstown |
| Adamsville | Adamsville |
| Adamswiller | Adamswiller |
| Adana | Adana |
| Adapa | Adapa |
| Adapazarı | Adpazarı |
