| 阿拉米语 | Ā lā mǐ yǔ | Aramaic (language) |
| 阿拔斯王朝 | Ā bá sī wáng cháo | Abbasid Empire (750-1258), successor of the Umayyad caliphate |
| 阿拖品化 | ā tuō pǐn huà | atropinization |
| 阿提拉 | ā tí lā | Attila (406-453), Hun emperor, known as the scourge of God |
| 阿摩司书 | Ā mó sī shū | Book of Amos, one of the books of the Nevi'im and of the Christian Old Testament |
| 阿摩尼亚 | ā mó ní yà | ammonia |
| 阿斗 | Ā Dǒu | A-dou, nickname of Liu Chan 刘禅 (207-271), son of Liu Bei, reigned as Shu Han emperor 233-263; fig. weak and inept person |
| 阿斯匹林 | ā sī pǐ lín | also written 阿司匹林; aspirin |
| 阿斯图里亚斯 | Ā sī tú lǐ yà sī | Asturias, northwest Spanish autonomous principality on the bay of Biscay; ancient Spanish kingdom from which the reconquista was based |
| 阿斯塔纳 | Ā sī tǎ nà | Astana, capital of Kazakhstan |
| 阿斯巴特 | ā sī bā tè | aspartame C14H18N2O (artificial sweetener) |
| 阿斯巴甜 | ā sī bā tián | aspartame |
| 阿斯旺 | Ā sī wàng | Aswan (town in south Egypt) |
| 阿斯旺高坝 | Ā sī wàng gāo bà | the Aswan dam in south Egypt |
| 阿斯兰 | ā sī lán | Aslan (from the Narnia chronicles) |
| 阿斯顿・马丁 | Ā sī dùn · Mǎ dīng | Aston Martin |
| 阿斯马拉 | Ā sī mǎ lā | Asmara, capital of Eritrea |
| 阿旺曲培 | Ā wàng Qū péi | Ngawang Choephel (1966-), Tibetan musicologist and dissident, Fullbright scholar (1993-1994), jailed 1995-2002 then released to US |
| 阿旺曲沛 | Ā wàng qǔ pèi | Ngawang Choepel (Tibetan, Fulbright scholar) |
| 阿昌 | Ā chāng | Achang also called Ngac'ang or Maingtha (ethnic group) |
| 阿昔洛韦 | ā xī luò wéi | aciclovir (also spelled acyclovir), antiviral drug |
| 阿普吐龙 | ā pǔ tǔ lóng | apatosaurus; former name: brontosaurus; also called 雷龙 |
| 阿普尔顿 | Ā pǔ ěr dùn | Appleton (name); Sir Edward Appleton (1892-1965), British physicist, Nobel laureate who discovered the ionosphere |
| 阿曼湾 | Ā màn Wān | Gulf of Oman |
| 阿月浑子 | ā yuè hún zi | pistachio |
| 阿月浑子实 | ā yuè hún zǐ shí | pistachio nut |
| 阿月浑子树 | ā yuè hún zǐ shù | pistachio tree |
| 阿木林 | ā mù lín | dullard; stupid person |
| 阿松森岛 | Ā sōng sēn dǎo | Ascension island |
| 阿格尼迪 | ā gé ní dí | Agnus Dei (section of Catholic mass) |
| 阿梵达 | ā fàn dá | avatar (loanword) |
| 阿森 | Ā sēn | Assen, city in the Netherlands |
| 阿森斯 | Ā sēn sī | Athens, Ohio |
| 阿森松岛 | Ā sēn sōng dǎo | Ascension Island |
| 阿荣旗 | Ā róng qí | Arun banner or Arongqi county in Hulunbuir 呼伦贝尔, Inner Mongolia |
| 阿比 | ā bǐ | Abby or Abi (name, sometimes short for Abigail) |
| 阿比西尼亚 | Ā bǐ xī ní yà | Abyssinia, historical name of Ethiopia |
| 阿比西尼亚人 | Ā bǐ xī ní yà rén | Abyssinian (person) |
| 阿比西尼亚官话 | Ā bǐ xī ní yà Guān huà | Amharic (language) |
| 阿比让 | Ā bǐ ràng | Abidjan (city in Ivory Coast) |
| 阿法尔 | Ā fǎ ěr | Afar region of northeast Ethiopia; Afar people |
| 阿法尔沙漠 | ā fǎ ěr shā mò | the Afar desert in Southern Ethiopia |
| 阿法罗密欧 | Ā fǎ Luō mì ōu | Alfa Romeo |
| 阿波罗 | Ā bō luó | Apollo (loanword) |
| 阿波罗计划 | Ā bō luó jì huà | the Apollo project (1961-1975), the NASA moon landing project |
| 阿洛菲 | Ā luò fēi | Alofi, capital of Niue |
| 阿爸父 | Ā bà fù | Abba (Aramaic word father); by ext. God the Father in Christian gospel |
| 阿爹 | ā diē | Dad |
| 阿尔伯塔 | Ā ěr bó tǎ | Alberta province of Canada, capital Edmonton 埃德蒙顿 |
| 阿尔伯特 | Ā ěr bó tè | Albert (name) |
