| Argentinian | argentyński |
| Argentinos Juniors | Argentinos Juniors Buenos Aires |
| Argentinosaurus | Argentynozaur |
| Argentières | Argentières |
| Argenton-sur-Creuse | Argenton-sur-Creuse |
| Argentré-du-Plessis | Argentré-du-Plessis |
| Argentum | Srebro |
| Arges | Ardżesz |
| Argeş | Ardżesz |
| Argeş County | Okręg Ardżesz |
| Argeş River | Ardżesz |
| argillaceous | iłowy |
| Argiope bruennichi | Tygrzyk paskowany |
| Argis | Argis |
| Argja Bóltfelag | AB Argir |
| Argo | Argo |
| Argo Navis | Argo |
| Argolide | Argolida |
| Argolis | Argolida |
| argon | argon |
| Argon fluorohydride | Fluorowodorek argonu |
| Argonath | Argonath |
| Argonaut | Argonauta |
| Argonauts | Argonauci |
| Argos | Argos |
| Argos System | Argos |
| Argostoli | Argostolion |
| argosy | galeon |
| argot | argotyzm |
| argotism | argotyzm |
| arguably | niewątpliwie |
| argue | kłócić |
| Arguin | Arguin |
| argument | awantura |
| Argument from ignorance | Argumentum ad ignorantiam |
| Argument of periapsis | Argument szerokości perycentrum |
| Argument of the perihelion | Argument szerokości perycentrum |
| Argumentum ad baculum | Argumentum ad baculum |
| Argumentum ad populum | Argumentum ad populum |
| Argun | Arguń |
| Argun River | Arguń |
| Argus | Argos |
| Argus Panoptes | Argos |
| Argyll | Argyll |
| Argyll and Bute | Argyll and Bute |
| Argyll Robertson pupil | Objaw Argylla Robertsona |
| Argyrosomus regius | Kulbin |
| Arhansus | Arhansus |
| ARI | Ari |
| Ari Þorgilsson | Ari Þorgilsson |
| Ari-Pekka Nikkola | Ari Pekka Nikkola |
| aria | aria |
| Aria Giovanni | Aria Giovanni |
| Ariadne | Ariadna |
| Ariadne Oliver | Ariadna Oliver |
| Arian | Ariowie |
| Ariana | Ariadna |
| Ariana Governorate | Gubernatorstwo Arjana |
| Ariane | Ariane |
| Arianespace | Arianespace |
| Arianism | Arianizm |
| Ariano Irpino | Ariano Irpino |
| Arianrhod | Arianrhod |
| Ariansim | Arianizm |
| Arianta arbustorum | Ślimak zaroślowy |
| Arica Province | Arica |
| Ariclenes da Silva Ferreira | Ariclenes da Silva Ferreira |
| arid land | obszary suche |
| Aride | Niewdzićczny |
| Ariegeois | Ariégeois |
| Ariel Ltd | Ariel |
| Ariel Ortega | Ariel Ortega |
| Ariel Ramírez | Ariel Ramírez |
| Ariel Sharon | Ariel Szaron |
| Aries | Baran |
| Aries Mu | Mi |
| Aries Shion | Sion |
| Arietids | Arietydy |
| Ariidae | Ariusowate |
| Arik Einstein | Arik Einstein |
| Arik-den-ili | Arik-den-ili |
| Arikara | Arikara |
| Arioald | Arioald |
| Ariogala | Ejragoła |
| Arion | Arion |
| Arion rufus | Ślinik wielki |
| Arionidae | Ślinikowate |
| Ariosophy | Ariozofia |
| Ariovistus | Ariowist |
| Ariplane | Avion |
| Arirang | Arirang |
| Arirang Festival | Arirang |
| Aris BC | Aris Saloniki |
| Aris FC | Aris Saloniki |
| Aris Thessaloniki | Aris Saloniki |
| arise | powstawać |
| Arish | Arisz |
| Aristaeus | Aristajos |
| Aristander | Aristander z Telmessos |
| Aristarchus | Arystarch z Samos |
| Aristarchus of Samos | Arystarch z Samos |
| Aristarchus of Samothrace | Arystarch z Samotraki |
| Aristarkh Apollonovich Belopolsky | Aristarch Biełopolski |
| Aristeion Prize | Aristeion |
| Aristide Briand | Aristide Briand |
| Aristides | Arystydes Sprawiedliwy |
| Aristides Gomes | Aristides Gomes |
| Aristides of Thebes | Arystydes z Aten |
| Aristides Pereira | Aristides Pereira |
| Aristides the Athenian | Arystydes z Aten |
| Aristippus | Arystyp |
| Aristobulus | Arystobul |
| Aristobulus II | Arystobul II |
| Aristobulus III of Judea | Arystobul III |
| Aristobulus IV | Arystobul |
| aristocracy | arystokracja |
| aristocratic | arystokratyczny |
| Aristolochiaceae | Kokornakowate |
| Aristomachus | Aristomachus |
| Aristophanes | Arystofanes |
| Aristophanes of Byzantium | Arystofanes z Bizancjum |
| Aristosuchus | Aristozuch |
| Aristoteles | Arystoteles |
| Aristotelian ethics | Etyka |
| Aristotle | Arystoteles |
| Aristotle Onassis | Arystoteles Onassis |
| arithmetic | arytmetyka |
| Arithmetic coding | Kodowanie arytmetyczne |
| arithmetic progression | ciąg arytmetyczny |
| arithmetic sequence | ciąg arytmetyczny |
| Arithmetic-geometric mean | Średnia arytmetyczno-geometryczna |
| arithmetical | arytmetyczny |
| arithmetics | arytmetyka |
| Arithmomania | Arytmomania |
| Arius | Ariusz |
| Ariz | Arizona |
| Arizona | Arizona |
| Arizona - Phoenix | Podział terytorialny Stanów Zjednoczonych |
| Arizona Cardinals | Arizona Cardinals |
| Arizona Crdinals | Arizona Cardinals |
| Arizona Diamondbacks | Arizona Diamondbacks |
| Arizona Dream | Arizona Dream |
| Arizona Territory | Arizona |
| Ariège | Ariège |
| Ariège River | Ariège |
| ARJ | ARJ |
| Arjan Beqaj | Arjan Beqaj |
| Arjen Anthony Lucassen | Arjen Lucassen |
| Arjen Robben | Arjen Robben |
| Arjeplog | Gmina Arjeplog |
| Arjeplog Municipality | Gmina Arjeplog |
| Arjuna | Ardźuna |
| ark | arka |
| Ark Linux | Ark Linux |
| Ark of the Covenant | Arka Przymierza |
| Arkadi Ghukasyan | Arkadi Ghukasjan |
| Arkadij Naiditsch | Arkadij Naiditsch |
| Arkadiusz Malarz | Arkadiusz Malarz |
| Arkadiusz Onyszko | Arkadiusz Onyszko |
| Arkady and Boris Strugatsky | Arkadij i Borys Strugaccy |
| Arkady Fiedler | Arkady Fiedler |
| Arkalyk | Arkałyk |
| Arkansas | Arkansas |
| Arkansas - Little Rock | Podział terytorialny Stanów Zjednoczonych |
| Arkansas River | Arkansas |
| Arkansas Territory | Terytorium Arkansas |
| Arkansaw | Arkansas |
| Arkefly | Arkefly |
| Arken Museum of Modern Art | Arques |
| Arkenstone | Arcyklejnot |
| Arkham | Arkham |
| Arkham Asylum | Arkham Asylum |
| Arkhangai Province | Ajmak północnochangajski |
| Arkhangelsk | Archangielsk |
| Arkhangelsk Oblast | Obwód archangielski |
| Arkhip Kuindzhi | Archip Kuindżi |
| Arkia Israel Airlines | Arkia |
| Arkona | Arkona |
| Arktic | Arktyka |
| Arktika | NS Arktika |
| Arktika class icebreaker | NS Arktika |
| Arlay | Arlay |
| Arlberg | Arlberg |
| Arleigh Burke class destroyer | Niszczyciele rakietowe typu Arleigh Burke |
| Arles | Arles |
| Arlette Laguiller | Arlette Laguiller |
| Arleux-en-Gohelle | Arleux-en-Gohelle |
| Arlington | Hrabstwo Arlington |
| Arlington National Cemetery | Narodowy Cmentarz w Arlington |
| Arlit | Arlit |
| Arlon | Arlon |
| Arlés | Arles |
| arm | ramię |
| ARM architecture | Architektura ARM |
| Arm-rest | Rćka |
| Arma Christi | Arma Christi |
| Armada of the Argentine Republic | Ara |
| Armada Rijeka | Armada Rijeka |
| armadillo | pancernik |
| Armageddon | Armagedon |
| Armagedon | Armageddon |
| Armagetron Advanced | Armagetron |
| Armagh | Armagh |
| Armagh City and District Council | Hrabstwo Armagh |
| Armagnac | Armagnac |
| armament | uzbrojenie |
