| aristocrazia | arystokracja |
| Aristofane | Arystofanes |
| Aristofane di Bisanzio | Arystofanes z Bizancjum |
| Aristosuchus pusillus | Aristozuch |
| Aristotele | Arystoteles |
| Aristotele Onassis | Arystoteles Onassis |
| Arith | Arith |
| Arithmetic Logic Unit | Jednostka arytmetyczno-logiczna |
| aritmetica | arytmetyka |
| Aritmetica modulare | Ciało Zp |
| Arizona | Arizona |
| Arizona Cardinals | Arizona Cardinals |
| Arizona Diamondbacks | Arizona Diamondbacks |
| Ariège | Ariège |
| Arj | ARJ |
| Arjan Beqaj | Arjan Beqaj |
| Arjen Anthony Lucassen | Arjen Lucassen |
| Arjen Robben | Arjen Robben |
| Arjuna | Ardźuna |
| Arjuzanx | Arjuzanx |
| Arkadi e Boris Strugatski | Arkadij i Borys Strugaccy |
| Arkansas | Arkansas |
| Arkham | Arkham |
| Arkham Asylum | Arkham Asylum |
| Arlanc | Arlanc |
| Arlay | Arlay |
| Arlebosc | Arlebosc |
| Arlempdes | Arlempdes |
| Arles | Arles |
| Arles-sur-Tech | Arles-sur-Tech |
| Arlet | Arlet |
| Arlette Laguiller | Arlette Laguiller |
| Arleuf | Arleuf |
| Arleux | Arleux |
| Arleux-en-Gohelle | Arleux-en-Gohelle |
| Arlington | Arlington |
| Arlon | Arlon |
| Arlos | Arlos |
| ARM | ARM |
| arma | broń |
| arma a doppio taglio | miecz obosieczny |
| Arma automatica | Broń automatyczna |
| arma biologica | broń biologiczna |
| arma chimica | broń chemiczna |
| arma da fuoco | broń palna |
| arma di distruzione di massa | broń masowego rażenia |
| Arma letale | Zabójcza broń |
| arma nucleare | broń jądrowa |
| Arma radiologica | Brudna bomba |
| armadillo volgare | stonoga |
| armadio | szafa |
| Armageddon | Har-Magedon |
| Armageddon - Giudizio finale | Armageddon |
| Armagetron | Armagetron |
| Armagh | Hrabstwo Armagh |
| Armagnac | Armagnac |
| Armaillé | Armaillé |
| armamento | uzbrojenie |
| Armancourt | Armancourt |
| Armand Fallières | Armand Fallières |
| Armand Gaétan Razafindratandra | Armand Gaétan Razafindratandra |
| Armand-Jean du Plessis de Richelieu | Armand Jean Richelieu |
| Armando | Herman |
| Armando di Borbone-Conti | Armand Burbon-Conti |
| Armando Gonçalves Teixeira | Petit |
| armata | armia |
| Armata Bianca | Biali |
| Armata Confederata della Virginia Settentrionale | Armia Północnej Wirginii |
| Armata dei Volontari | Armia Ochotnicza |
| Armata del Potomac | Armia Potomacu |
| Armata Popolare di Liberazione della Jugoslavia | Narodowa Armia Wyzwolenia Jugosławii |
| Armata Popolare Jugoslava | Jugosłowiańska Armia Ludowa |
| Armata Rossa | Armia Czerwona |
| armato | zbrojny |
| armatura | uzbrojenie |
| Armaucourt | Armaucourt |
| Armavir | Armawir |
| Armazio | Armatus |
| Armbouts-Cappel | Armbouts-Cappel |
| Armeau | Armeau |
| Armen Levonovič Takhtajan | Armen Tachtadżian |
| armena | Armeńczyk |
| Armendarits | Armendarits |
| Armeni | Ormianie |
| Armenia | Armenia |
| armeno | ormiański |
| Armenteule | Armenteule |
| Armentieux | Armentieux |
| Armentières | Armentières |
| Armentières-sur-Avre | Armentières-sur-Avre |
| Armentières-sur-Ourcq | Armentières-sur-Ourcq |
| Armes | Armes |
| Armi a microonde | Active Denial System |
| Armi chimiche | Broń chemiczna |
| Armi contraerei | Działo przeciwlotnicze |
| Armi da fuoco | Broń palna |
| Armi della Terra di Mezzo | Aranrúth |
| Armi nucleari | Broń jądrowa |
| Armia Krajowa | Armia Krajowa |
| Armidale | Armidale |
| Armilla | Sfera armilarna |
| Armillac | Armillac |
| Armillaria | Opieńka |
| Armillaria mellea | Opieńka miodowa |
| Armillaria ostoyae | Opieńka ciemna |
| Armin Hary | Armin Hary |
| Armin Meiwes | Armin Meiwes |
| Armin van Buuren | Armin van Buuren |
| Armin Zöggeler | Armin Zöggeler |
| Arminia Bielefeld | Arminia Bielefeld |
| Arminianesimo | Arminianizm |
| Arminio | Arminius |
| Armissan | Armissan |
| armistizio | rozejm |
| Armix | Armix |
| Armodio e Aristogitone | Harmodios i Aristogejton |
| armonia | harmonia |
| armonia vocalica | harmonia samogłosek |
| armonica a bicchieri | harmonika szklana |
| Armonica a bocca | Harmonijka ustna |
| Armoniche | Składowa harmoniczna |
| Armoniche sferiche | Harmoniki sferyczne |
| Armonici naturali | Szereg harmoniczny |
| Armonista | Muzyk |
| armonizzazione delle leggi | harmonizacja prawa |
| armonizzazione internazionale | uzgodnienia międzynarodowe |
| Armorica | Armoryka |
| Armous-et-Cau | Armous-et-Cau |
| Armoy | Armoy |
| Armstrong | Armstrong |
| Army Ballistic Missile Agency | Wojskowa Agencja Pocisków Balistycznych |
| Arnac | Arnac |
| Arnac-la-Poste | Arnac-la-Poste |
| Arnac-Pompadour | Arnac-Pompadour |
| Arnac-sur-Dourdou | Arnac-sur-Dourdou |
| Arnage | Arnage |
| Arnaldo da Brescia | Arnold z Brescii |
| Arnaldo da Villanova | Arnold de Villanova |
| Arnaldo Forlani | Arnaldo Forlani |
| Arnancourt | Arnancourt |
| Arnas | Arnas |
| Arnat Partiiat | Partia Kobiet |
| Arnaud-Guilhem | Arnaud-Guilhem |
| Arnave | Arnave |
| Arnaville | Arnaville |
| Arnay-le-Duc | Arnay-le-Duc |
| Arnay-sous-Vitteaux | Arnay-sous-Vitteaux |
| Arnayon | Arnayon |
| Arnbruck | Arnbruck |
| Arne Friedrich | Arne Friedrich |
| Arne Tiselius | Arne Wilhelm Kaurin Tiselius |
| Arneb | Arneb |
| Arnefrido | Arnefrit |
| Arnes | Ůotr |
| arnese | narzędzie |
| Arnex-sur-Nyon | Arnex-sur-Nyon |
| Arnex-sur-Orbe | Arnex-sur-Orbe |
| Arnhem | Arnhem |
| Arnhem Land | Ziemia Arnhema |
| arnia | ul |
| Arnicourt | Arnicourt |
| Arnione | Nerka |
| Arnières-sur-Iton | Arnières-sur-Iton |
| Arno | Arno |
| Arno Penzias | Arno Penzias |
| Arnold | Arnold |
| Arnold Böcklin | Arnold Böcklin |
| Arnold Geulincx | Arnold Geulincx |
| Arnold Rüütel | Arnold Rüütel |
| Arnold Schwarzenegger | Arnold Schwarzenegger |
| Arnold Schönberg | Arnold Schönberg |
| Arnold Sommerfeld | Arnold Sommerfeld |
| Arnold Van Gennep | Arnold van Gennep |
| Arnolfo di Carinzia | Arnulf z Karyntii |
| Arnor | Arnor |
| Arnos | Arnos |
| Arnouville-lès-Gonesse | Arnouville-lès-Gonesse |
| Arnouville-lès-Mantes | Arnouville-lès-Mantes |
| Arnsberg | Rejencja Arnsberg |
| Arnschwang | Arnschwang |
| Arnstadt | Arnstadt |
| Arnstein | Arnstein |
| Arnstorf | Arnstorf |
| Arnèke | Arnèke |
| Arné | Arné |
| Arnéguy | Arnéguy |
| Aroffe | Aroffe |
| Arogno | Arogno |
| Aroldo I di Danimarca | Harald Sinozęby |
| aroma | środek zapachowy |
| Aroma piccante | Smak |
| Aromas | Aromas |
| aromaterapia | aromaterapia |
| Aron | Aron |
| Arona | Arona |
| Aronne | Aaron |
| AROS | AROS Research Operating System |
| Arosa | Arosa |
| Aroue-Ithorots-Olhaïby | Aroue-Ithorots-Olhaïby |
| Aroz | Aroz |
| ARP | ARP |
| ARP poisoning | ARP Spoofing |
| arpa | harfa |
| Arpacsad | Arfachsad |
| Arpad | Árpád |
| Arpad Emrick Elo | Árpád Élő |
| Arpadi | Árpádowie |
| Arpaillargues-et-Aureillac | Arpaillargues-et-Aureillac |
| Arpajon | Arpajon |
| Arpajon-sur-Cère | Arpajon-sur-Cère |
| Arpalice | Harpalyke |
| ARPANET | Advanced Research Projects Agency Network |
| Arpavon | Arpavon |
