| Assam | Ásám |
| Assen | Assen |
| Association de la Jeunesse Auxerroise | AJ Auxerre |
| Association of Surfing Professionals | Active Server Pages |
| Association Sportive de Monaco Football Club | AS Monaco FC |
| Association Sportive de Saint-Étienne Loire | AS Saint-Étienne |
| Association Sportive Nancy-Lorraine | AS Nancy |
| Associazione Calcio Ancona | AC Ancona |
| Associazione Calcio Chievo Verona | AC ChievoVerona |
| Associazione Calcio Fiorentina | ACF Fiorentina |
| Associazione Calcio Milan | AC Milan |
| Associazione Calcio Siena | AC Siena |
| Associazione Sportiva Livorno Calcio | AS Livorno Calcio |
| Associazione Sportiva Roma | AS Roma |
| Assur | Aššúr |
| asta | násada |
| Astaná | Astana |
| astato | astat |
| astenosfera | astenosféra |
| Asteraceae | Hvězdnicovité |
| Asterales | Hvězdnicotvaré |
| Asteria | Asteria |
| asterisco | hvězdička |
| Asterisk | Asterisk |
| Asterismo | Asterismus |
| Asterión | Asterios |
| asteroide | asteroid |
| Asteroide troyano | Troján |
| Asteroides Amor | Amorova skupina |
| Asteroides Apolo | Apollonova skupina |
| Asteroides Atón | Atenova skupina |
| Asteroides cercanos a la Tierra | Blízkozemní planetka |
| Asteroides potencialmente peligrosos | Potenciálně nebezpečná planetka |
| Asteráceas | Hvězdnicovité |
| Asti | Asti |
| Astigmatismo | Astigmatismus |
| astil | násada |
| astilla | klacek |
| astillar | štěpit |
| astillero | loděnice |
| Aston Villa Football Club | Aston Villa FC |
| Astracán | Astrachaň |
| Astraeus | Astraios |
| Astraján | Astrachaň |
| Astrea | Astraea |
| Astreo | Astraios |
| Astrid Lindgren | Astrid Lindgrenová |
| astro | hvězda |
| ASTRO-F | Akari |
| Astrobiología | Astrobiologie |
| astrofísica | astrofyzika |
| Astrolabio | Astroláb |
| astrología | astrologie |
| astrometría | astrometrie |
| Astronauta | Kosmonaut |
| astronave | kosmická loď |
