| Acetilholinesteraza | Acetilholinski receptor | Acetilketen |
| Acetilklorid | Acetilperoksid | Acetilsalicilna kislina |
| Aceton | Aceton cianohidrin | Aceton peroksid |
| Acetoncianhidrin | Acetonitril | Acetonnitril |
| Acetylcholine | ACF Fiorentina | ACh |
| ACH Volley | Achard | Achatina fulica |
| Achenheim | Acherontia atropos | Achille Baraguay |
| Achille Baraguey d'Hilliers | Achille Bazaine | Achille Bocchi |
| Achille Compagnoni | Achille D'Havet | Achille Lauro |
| Achille Lauro (pevec) | Achille Liènart | Achille Liénart |
| Achille Lienart | Achille Locatelli | Achille Manara |
| Achille Mbembe | Achille Silvestrini | Achille Starace |
| Achille Varzi | Achille-Fernand-Hector Dassonville | Achille-Paul-Théophile Delay |
| Achillea | Achillea atrata | Achillea clavenae |
| Achillea clavennae | Achillea eupatorium | Achillea filicifolia |
| Achillea filipendulina | Achillea millefolium | Achilles (razločitev) |
| Achilleus Kewanuka | Achim von Arnim | Achterhoek |
| Aci Bertoncelj | Acid | Acid Bath |
| Acid bath | Acidogena celica | Acidotično dihanje |
| Aciklovir | Acinarna žleza | Acinonyx |
| Acinonyx jubatus | Acinonyx jubatus jubatus | Acipenser heckelii |
| Acipenser ladanus | Acipenser naccari | Acipenser naccarii |
| Acipenser nardoi | Acipenser nasus | Acipenser nudiventris |
| Acipenser platycephalus | Acipenser ruthenus | Acipenser sturio |
| Acipenser sturionaster | Acipenser sturionellus | Acipenseridae |
| Acireale | Acker | Ackermann |
| Ackley, Iowa | Ackworth, Iowa | Aclypea opaca |
| Aclypea undata | ACM DL (identifikator) | ACM Slovenija |
| Acne inversa | Acne oleinica in picea | Acne vulgaris |
| Aco Babić | Aco Franc Šuštar | Aco Lebarič |
| ACOG | Aconcagua | Aconitum angustifolium |
| Aconitum napellus | Aconitum variegatum | Acosta |
| Acoustic Hearts of Winter | Acquired Immune Deficiency Syndrome | Acremonium |
| Acro Sport II | Acrocephalus | Acrocephalus (revija) |
| Acrocephalus arundinaceus | Acrocephalus schoenobaenus | Acroni Jesenice |
| ACS-100 Sora | Acsa | Acsalag |
| Acsád | Act of Settlement | ACTA |
| Acta Chimica Slovenica | Acta diurna | Acta ecclesiastica Sloveniae |
| Acta Ecclesiastica Sloveniae | Acta martyrum | Acta neophilologica |
| Acta Neophilologica | Acta theologica Sloveniae | Acta Theologica Sloveniae |
| Acting-out | Actiniaria | Actinopterygii |
| Actio | Actio (rimsko pravo) | Action française |
| 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 |
