| อักษรย่อ | คำเต็ม | รายละเอียด |
| ALS | Amyotrophic Lateral Sclerosis | |
| Asst. | Assistant | |
| AMEM | ASEAN Ministers on Energy Meeting | |
| AICO | ASEAN Industrial Cooperation Scheme | |
| a.s.a.p | as soon as possible | |
| AEM | ASEAN Economic Ministers Meeting | |
| A.M. | Ante Meridiem | |
| A /C | Air Conditioner / -ing | |
| ACMECS | Ayeyawady - Chao Phraya - Mekong Economic Cooperation Strategy | |
| Aug. | August | |
