| Activated | Active | Active (kulle) |
| Active (strömfåra) | Active 24 | Active Biotech |
| Active Capital | Active Capital AB | Active Desktop |
| Active Directory | Active Media Group | Active metabolic rate |
| Active Pass | Active Phased Array Radar | Active Reef |
| Active Server Pages | Active set | Active set-metoden |
| Active site | Active Sound | Active Time Battle |
| Active X | Active, estrecho | Active, roca |
| Active24 | ActiveQt | ActiveX |
| Actividades de Construcción y Servicios | Actividades de Construcción y Servicios S.A. | Activision |
| Activision Blizzard | Activision Gamemaker | Activity |
| Activity (travhäst) | Activity Pub | Activitypub |
| ActivityPub | Actizera | Actizera ahasveros |
| Actizera anisophthalma | Actizera arsacia | Actizera atrigemmata |
| Actizera endymion | Actizera grumi | Actizera lucida |
| Actizera panaegides | Actizera panagaea | Actizera stellata |
| Actizera taygetica | Actizona | Actizona borealis |
| Actizona chuskae | Actizona trifoveatum | Actlzayanca |
| Actlzayanca de Hidalgo | Actoceles abscondita | Actoceles georgiana |
| Actocetor | Actocetor afrus | Actocetor anormalipennis |
| Actocetor beckeri | Actocetor decemugttatus | Actocetor hova |
| Actocetor indicus | Actocetor lindneri | Actocetor margaritatus |
| Actocetor nigrifinis | Actocetor panelii | Actocetor toniatabae |
| Actocetor yaromi | Actodromas bairdii | Actol |
| Acton | Acton (berg) | Acton (community i Storbritannien, Wales) |
| Acton (del av en befolkad plats) | Acton (distrikt i Storbritannien, England, Cheshire East) | Acton (kommun) |
| Acton (olika betydelser) | Acton (ort i Storbritannien, England, Shropshire) | Acton and Old Felton |
| Acton Beauchamp | Acton Bell | Acton Bjørn |
| Acton Bridge | Acton Bridge (ort) | Acton Burnell |
| Acton Burnell Castle | Acton Green | Acton Park |
| Acton Round | Acton Scott | Acton Smee Ayrton |
| Acton Trussell | Acton Trussell and Bednall | Acton Turville |
| Acton Turville (ort) | Acton Vale | Acton Vale (kommun) |
| Acton Vale (ort) | Acton, Canberra | Acton, Cheshire |
| Acton, Cheshire West and Chester | Acton, John | Acton, John Dalberg-Acton, 1:e baron |
| Acton, Kalifornien | Acton, London | Acton, Maine |
| Acton, Massachusetts | Acton, Middlesex | Acton, Mount |
| Acton, Québec | Acton, Shropshire | Acton, Suffolk |
| Acton, Wrexham | Actoniscus lindahli | Actoniscus tuberculatus |
| Actopan | Actopan (kommun i Mexiko, Hidalgo, lat 20,28, long -98,92) | Actopan (kommun i Mexiko, Veracruz, lat 19,53, long -96,51) |
| Actopan (ort i Mexiko, Hidalgo, Actopan, lat 20,27, long -98,94) | Actopan (ort i Mexiko, Morelos) | Actopan (ort i Mexiko, Veracruz, Actopan, lat 19,50, long -96,62) |
| Actopan (ort i Mexiko, Veracruz, Tlacotepec de Mejía) | Actopan, Actopan | Actopan, Hidalgo |
| Actopan, Morelos | Actopan, Tlacotepec de Mejía | Actophilornis |
| Actophilornis africanus | Actophilornis albinucha | Actophylla |
| Actophylla varendorffiana | Actoplanes canniformis | Actoplanes grandis |
| Actoplanes ridleyi | Actopsyllus | Actopsyllus longipes |
| ACTOR | Actor | Actora aestuum |
| Actora cinerascens | Actora ferruginea | Actora flavipes |
| Actornithophilus | Actornithophilus bicolor | Actornithophilus ceruleus |
| Actornithophilus grandiceps | Actornithophilus hoplopteri | Actornithophilus limosae |
| Actornithophilus multisetosus | Actornithophilus ochraceus | Actornithophilus paludosus |
| Actornithophilus pediculoides | Actornithophilus piceus | Actornithophilus pustulosus |
| Actornithophilus spinulosus | Actornithophilus totani | Actornithophilus umbrinus |
| Actors Studio | Actorthia | Actorthia ahngeri |
| Actorthia canescens | Actorthia efflatouni | Actorthia flavipennis |
| Actorthia frontata | Actorthia kerzhneri | Actorthia khedivialis |
| Actorthia kozlovi | Actorthia lacteipennis | Actorthia lucidipennis |
| Actorthia micans | Actorthia nigra | Actorthia olivierii |
| Actorthia pulchella | Actraiser | ActRaiser |
| Actraiser 2 | Actress | Actrix |
| Actrix dissimulatrix | Actrotomofil | Actrotomofili |
| Acts of the Unspeakable | Acts of Union 1707 | ACTU |
| Actual Miles | Actual Miles: Henley's Greatest Hits | Actually |
| Actuant | Actumnus | Actumnus obesus |
| Actun Tunichil Muknal | Actus reus | Actus Tragicus |
| Actus Tragicus (serieskapargrupp) | Actus tragicus av Bach | Actus Tragicus av Bach |
| Actus Tragicus av J. S. Bach | Actus Tragicus av J.S. Bach | ACTUV |
| Acu | Acuaco | Acuaco (ort) |
| Acuamanala | Acuamanala de Miguel Hidalgo | Acuan acuminata |
| Acuan arsenei | Acuan bahamense | Acuan bicornutum |
| Acuan cooleyi | Acuan covillei | Acuan depressa |
| Acuan depressum | Acuan fallax | Acuan fendleri |
| Acuan fruticosum | Acuan glandulosum | Acuan guadeloupense |
| Acuan illinoense | Acuan insulare | Acuan interior |
| Acuan jamesii | Acuan latum | Acuan leptolobum |
| Acuan obtusa | Acuan oligospermum | Acuan painteri |
| Acuan palmeri | Acuan pringlei | Acuan pumilum |
| Acuan reticulatum | Acuan subulatum | Acuan texanum |
| Acuan tracyi | Acuan velutinum | Acuan virgatum |
| Acuania arborescens | Acuapa | Acuapa (ort i Mexiko, Hidalgo, Tlanchinol) |
| Acuapa (ort i Mexiko, Veracruz, Soledad Atzompa) | Acuapa (ort i Mexiko, Veracruz, Zongolica) | Acuapa, Hidalgo |
| Acuapa, Soledad Atzompa | Acuapa, Zongolica | Acuaria |
| Acuaria skrjabini | Acuaria spiralis | Acuaria uncinata |
| Acuariidae | Acuatella | Acuatella vestituda |
| Acuautepec o Agua de la Caña | Acuautepec o Agua de la Cana | Acuautla |
| Acuautla (ort i Mexiko) | Acuautla, Hidalgo | Acuayucan |
| Acuítzio del Canje | Acuña | Acuña (auktor) |
| Acuña (ö) | Acuña (kommun) | Acuña (olika betydelser 2) |
| Acuña (olika betydelser) | Acuña (udde) | Acuña Island |
| Acuña Rocks | Acuña, islote | Acuña, punta |
| Acubens | Acucena | Acucha de Cajoncitos |
| Acude Acarape do Meio | Acude Acarau Mirim | Acude Aires de Sousa |
| Acude Araras | Acude Banabuiu | Acude Brumado |
| Acude Caxitore | Acude Choro Limao | Acude do Jatoba |
| Acude Engenheiro Arcoverde | Acude Flamengo | Acude Gaviao |
| Acude General Sampaio | Acude Lima Campos | Acude Novo |
| Acude Pedras Brancas | Acude Pentecoste | Acude Quixeramobim |
| Acude Riacho do Sangue | Acude Sabugi | Acude Salao |
| Acude Santana | Acude Santo Antonio | Acude Sao Mateus |
| Acude Sume | Acude Tatajuba | Acude Tucunduba |
