| Ascarina | Ascaris | Ascaris lumbricoides |
| Ascending aorta | Ascending cholangitis | Ascending colon |
| Ascending lumbar vein | Ascending palatine artery | Ascension Island |
| Ascension of Jesus | Ascension Parish, Louisiana | Ascertainment bias |
| Ascetic | Asch. | Aschbach, Bas-Rhin |
| Aschelminthes | Aschiza | Aschoff body |
| Ascidia | Ascidiacea | ASCII |
| ASCII art | ASCII Corporation | Ascites |
| AsCl3 | AsCl5 | Asclepiadoideae |
| Asclepias | Asclepias californica | Asclepias cordifolia |
| Asclepias curassavica | Asclepias eriocarpa | Asclepias fruticosa |
| Asclepias purpurascens | Asclepias solanoana | Asclepias syriaca |
| Asclepias tuberosa | Asclepias verticillata | Ascobolaceae |
| Ascobolus | Ascobolus americanus | Ascobolus bohemicus |
| Ascobolus brunneus | Ascobolus carbonicola | Ascobolus cervinus |
| Ascobolus coronatus | Ascobolus denudatus | Ascobolus difformis |
| Ascobolus elegans | Ascobolus foliicola | Ascobolus hyperboreus |
| Ascobolus persoonii | Ascobolus psittacinus | Ascobolus terrestris |
| Ascobolus ursinus | Ascobolus violascens | Ascobolus xylophilus |
| Ascomycota | Ascona | Ascophyllum |
| Ascophyllum nodosum | Ascorbate | Ascorbic acid |
| Ascorbyl palmitate | Ascot Corner, Quebec | Ascoviridae |
| Ascovirus | Ascros | Asda Story |
| ASEAN | ASEC Mimosas | Aseel Omran |
| Aselizumab | Asellia tridens | Asemeia violacea |
| Asemia | Asenath | Asepsis |
| Aseptic meningitis | Aseroë | Aseroë actinobola |
| Aseroë arachnoidea | Aseroë calathiscus | Aseroë coccinea |
| Aseroë corrugata | Aseroë floriformis | Aseroë genovefae |
| Aseroë hookeri | Aseroë junghuhnii | Aseroë lysuroides |
| Aseroë muelleriana | Aseroë multiradiata | Aseroë pallida |
| Aseroë pentactina | Aseroë poculiformis | Aseroë rubra |
| Aseroë viridis | Aseroë zeylanica | Aseroe |
| Aseroe actinobola | Aseroe arachnoidea | Aseroe calathiscus |
| Aseroe coccinea | Aseroe corrugata | Aseroe floriformis |
| Aseroe genovefae | Aseroe hookeri | Aseroe lysuroides |
| Aseroe muelleriana | Aseroe multiradiata | Aseroe poculiformis |
| Aseroe zeylanica | Asexuality | Asfarviridae |
| Asfyj Rural District | Asgaran, Lorestan | Asgarlu |
| Asghar Farhadi | Asgharabad, Qazvin | Ash (analytical chemistry) |
| Ash Flat, Arkansas | Ash heap of history | Ash Township, Michigan |
| Ash Wednesday (poem) | Ash'ari | Ash-shab yurid isqat an-nizam |
| AsH3 | Asha 205 | Asha 206 |
| Asha 302 | Asha 501 | Asha Haji Elmi |
| Ashanti (singer) | Asharoken, New York | Ashaway, Rhode Island |
| Ashburn, Georgia | Ashby, Minnesota | Ashden |
| Ashdown, Arkansas | Asher Ginsberg | Asherah |
| Asherman's syndrome | Ashford, Wisconsin | Ashgabat |
| Ashik | Ashin-e Olya | Ashin-e Sofla |
| Ashineh | Ashippun, Wisconsin | Ashkam Kuh |
| Ashkan Dejagah | Ashkar Meydan | Ashkum, Illinois |
| Ashland (town), Wisconsin | Ashland City, Tennessee | Ashland County, Wisconsin |
| Ashland Township, Michigan | Ashland, Illinois | Ashland, Kansas |
| Ashland, Kentucky | Ashland, Mississippi | Ashland, Oregon |
| Ashland, Wisconsin | Ashlee Simpson | Ashley Benson |
| Ashley Cole | Ashley Greene | Ashley Harkleroad |
| Ashley Hemmings | Ashley Judd | Ashley Massaro |
| Ashley Olsen | Ashley Sammons | Ashley Tisdale |
| Ashley Williams (footballer) | Ashley Young | Ashley, Illinois |
| Ashley, Michigan | Ashley, North Dakota | Ashley, Ohio |
| Ashmore and Cartier Islands | Ashmore, Illinois | Ashok Kumar |
| Ashok Leyland | Ashour El-Adham | Ashoura (missile) |
| ASHRAE | Ashraf Ali Thanwi | Ashraf Amgad Elseify |
| Ashraf Barhom | Ashraf Ghani | Ashraf Habibullah |
| Ashraf Kasem | Ashraf Nu'man | Ashraf Shatat |
| Ashrafabad, Kerman | Ashrafabad, Mazandaran | Ashrestaq Rural District |
| Ashtabula, Ohio | Ashtian County | Ashtianeh |
| Ashtijeh | Ashton Carter | Ashton Kutcher |
| Ashton, Iowa | Ashton, Nebraska | Ashton, South Dakota |
| Ashtray | Ashur Bet Sargis | Ashur TV |
| Ashur-nadin-ahhe I | Ashur-nirari II | Ashur-rabi I |
| Ashur-shaduni | Ashurbay | Ashville, Ohio |
| Ashwaubenon, Wisconsin | Ashy-faced owl | Asi (TV series) |
| AsI3 | Asia | Asia Alfasi |
| Asia Carrera | Asia Cell | Asia Minor |
| Asiab-e Saran | Asiacell | Asian and Pacific theatre of World War I |
| Asian cat | Asian Development Bank | Asian Football Confederation |
| Asian Garden Dormouse | Asian giant hornet | Asian Infrastructure Investment Bank |
| Asian palm civet | Asian Semi-longhair | Asian values |
| Asiana Airlines | Asiana Airlines Flight 214 | Asiatravel.com |
| Asier Arranz Martín | Asier del Horno | Asier Illarramendi |
| Asier Salcedo | Asif Ali Zardari | Asif ibn Barkhiya |
| ASIFA-Hollywood | Asii Chemnitz Narup | Asilidae |
| Asimina triloba | ASIMO | Asin |
| Asio flammeus | Asio otus | Asity |
| Asiyab-e Alikhan | Asiyab-e Mir Naser | ASK |
| Ask price | Ask.com | Ask.fm |
| Askaouen | Askar Akayev | Askeptosauridae |
| Askeptosauroidea | Askeptosaurus | Askerî Müze |
| Aski Mahalleh, Amol | Aski Mahalleh, Dabudasht | Aski Shahr |
| Askia Mohammad I | Askov, Minnesota | Aslan Aslanov |
| Aslan Maskhadov | Aslı Tandoğan | ASM-135 ASAT |
| Asma al-Assad | Asma Barlas | Asma bint Adiy al-Bariqiyyah |
| Asma Elghaoui | Asmaa Mahfouz | Asmahan Bitar |
| Asmahur-e Olya | Asmahur-e Sofla | ASME |
| Asmir Begović | Asni | Únor 1948 |
| ASNOVA | Asociación de Scouts de Cuba | Asotin, Washington |
| ASP | Asp.net | ASP.net |
| ASP.NET | Aspahi Kola | Aspalathus |
| Aspalathus acicularis | Aspalathus albens | Aspalathus elliptica |
