| Action-adventure | Activa | Activision |
| Acton | Actors Studio | Actors' Studio |
| Acuši Janagisava | Acuši Jonejama | Acuši Natori |
| Acuši Učijama | Acuhiro Miura | Acujoši Furuta |
| Aculepeira ceropegia | Aculepeira vachoni | Acura |
| Acuto Učida | Aczino | Ad |
| AD | Ad abolendam | Ad Astra: Pot do zvezd |
| Ad beatissimi apostolorum | Ad Deir | Ad exstirpanda |
| Ad gentes Divinitus | Ad Gentes Divinitus | Ad hoc |
| Ad Iubileum | Ad libitum | Ad Pirum |
| Ad providam | AD Scout | Ad Simonis |
| Ad-hoc | Ada | Ada (ime) |
| Ada (informatika) | Ada (programski jezik) | Ada (razločitev) |
| Ada Adler | Ada Škerl | Ada Bojana |
| Ada Ciganlija | Ada E. Yonath | Ada Karijska |
| Ada Klanjšek | Ada Krivec | Ada Krivic |
| Ada Lovelace | Ada Smolnikar | Ada Smolnikar–Bešter |
| Ada Vidovič Muha | Ada Yonath | Ada, Šodolovci |
| Ada, Srbija | Adaševci | Adab |
| Adacs | Adacta | Adad |
| Adad-nirari I. | Adad-nirari III. | Adadnirari I. |
| Adagietto | Adagio | Adagissimo |
| Adair | Adalbero (Štajerski) | Adalbero Štajerski |
| Adalbero, Koroški vojvoda | Adalbert Balta | Adalbert Fluck von Raggamb |
| Adalbert iz Egmonda | Adalbert Praški | Adalbert Sorsich von Severin |
| Adalbert Stifter | Adalbert Stubel | Adalberto, vojvoda Bergama |
| Adalbertus Ranconis de Ericinio | Adalet ve Kalkınma Partisi | Adalgis |
| Adalgizel | Adalia bipunctata | Adalimumab |
| Adam | Adam (Biblija) | Adam (gora) |
| Adam (priimek) | Adam (razločitev) | Adam (Sveto pismo) |
| Adam A500 | Adam A700 | Adam Albert von Neipperg |
| Adam Berke | Adam Bilzerian | Adam Bohorič |
| Adam Bokany | Adam Carson | Adam Custine |
| Adam de la Halle | Adam de St. Victor | Adam De St. Victor |
| Adam Eckersley | Adam Eggich | Adam Farkaš |
| Adam Ferguson | Adam Georg von Agthe | Adam Gnezda Čerin |
| Adam Gruenfeld | Adam Helmer | Adam in Eva |
| Adam in Eva (Dürer) | Adam Ivanoci | Adam Ivanocy |
| Adam Ivanovič Balla | Adam Johann von Krusenstern | Adam Joseph Maida |
| Adam Korol | Adam Korytowski | Adam Kozłowiecki |
| Adam Kozlowiecki | Adam Levine | Adam Lutar |
| Adam Luthar | Adam Małysz | Adam Malysz |
| Adam Mickiewicz | Adam Nagaitis | Adam Neipperg |
| Adam Oates | Adam Olearius | Adam Ondra |
| Adam Otto Wilhelm von Bistram | Adam Petrovič Ožarovski | Adam Philippe, Comte de Custine |
| Adam Possamai | Adam Ramelmayer | Adam Rammelmeyer |
| Adam Ravbar | Adam Ravbar (vitez) | Adam Richard Wiles |
| Adam Rosales | Adam Sandler | Adam Schall |
| Adam Sedgwick | Adam Skalar | Adam Smith |
| Adam St. Victor | Adam Stefan Sapieha | Adam Weishaupt |
| Adam Weiss | Adam's Apple | Adami |
| Adamič | Adamič-Lundrovo nabrežje | Adamič-Lundrovo nabrežje, Ljubljana |
| Adamičeva cesta | Adamičeva cesta, Grosuplje | Adamić |
| Adamit | Adamiti | Adamizem |
| Adamo Stefano Sapieha | Adamov most | Adamov vrh |
| Adamovec | Adamović | Adamovo |
| Adamovo jabolko | Adams | Adamsville |
| Adamsville, Alabama | Adamswiller | Adana |
| Adana (provinca) | Adansonia | Adansonia digitata |
| Adaptivna optika | ADATS | Adács |
| Adásztevel | Adélard Godbout | Adílson Batista |
| Adıyaman (provinca) | Adûnakhôr | Adžamovci |
| Adžarija | Adžići | Adžib |
| Adžine Livade | ADB (identifikator) | ADCOMSUBORDCOMPHIBSPAC |
| Adda | Addams | Addis Abeba |
| Addis Abebe | Addison | Addisonova bolezen |
| Addizione Erculea | Addobbati | Addukcija |
| Ade Akinbiyi | Adefovir | Adela |
| Adela Šajn | Adela Žgur | Adela Flandrijska |
| Adela Milčinović | Adela Noriega | Adelaide |
| Adelaide Street Circuit | Adelajda | Adelajda del Vasto |
| Adelajda Holandska | Adelajda Ogrska | Adelajda Ogrska (u. 1140) |
| Adelajda Ortenburška | Adelajda Ortenburško-Radovljiška | Adelajda Zutphenska |
| Adelard | Adelard Godbout | Adelard iz Batha |
| Adelbert Ames | Adelbert von Chamisso | Adelboden |
| Adelchi Serena | Adele | Adele Laurie Blue Adkins |
| Adelfat | Adelhard Roidinger | Adelijina dežela |
| Adelijina zemlja | Adelijski pingvin | Adelina |
| Adeline | Adeline Virginia Woolf | Adelma Vay de Vaya |
| Adelma von Vay | Adelschi Serena | Adelson-Velski |
| Adelstein | Adem | Adem Kapič |
| Adem Kastrati | Ademar iz Puya | Ademar Monteilski |
| Ademi | Aden | ADEN top |
| Aden, Jemen | Aden, Južni Jemen | Adenilat ciklaza |
| Adenilat-ciklaza | Adenilatciklaza | Adenilatna ciklaza |
| Adenilciklaza | Adenililciklaza | Adenin |
| Adenitis | Adenium obesum | Adenohipofiza |
| Adenokarcinom | Adenovirus | Adenovirusi |
| Adenozin trifosfat | Adenozin-5'-trifosfat (ATP) | Adenozin-trifosfat |
| Adenozintrifosfat | Adenska kultura | Adenski zaliv |
| Adeodato Giovanni Piazza | Ader Eole | Aderščina |
| Adergas | Adewale Agbaje | Adewale Akinnuoye - Agbaje |
| Adewale Akinnuoye Agbaje | Adewale Akinnuoye-Agbaje | ADFGVX |
| ADFGX | ADH | Adhan |
| Adhémar | ADHD | Adhemar |
| Adhemar da Silva | Adhemar Ferreira da Silva | Adherenca |
| Adhezijske molekule | Adhokracija | Adi |
| Adi Šankara | Adi Smolar | Adi Vidmajer |
| Adiabata | Adiabatna preobrazba | Adiabatna sprememba |
| Adiabatna stisljivost | Adiabatni eksponent | Adiabatni indeks |
