| Abbreviation | Definition |
|---|---|
| AHI | Apnea???hypopnea index |
| AHI | Apneahypopnea index |
| AHI | Apnea–hypopnea index |
| AHI | Apnoea Hypopnea Index |
| AHI | Apnoea Hypopnoea Index |
| AHI | Azrak Hamway Incorporated |
| AHI | Azrak Hamway International |
| AHIC | A Home in Community |
| AHIC | Alternative Health Improvement Center |
| AHIC | At Home Independent Care |
| AHIG | All Hope Is Gone |
| AHIQA | Alabama Healthcare Improvement and Quality Alliance |
| AHIR | Angus Herd Improvement Records |
| AHIT | A Hat In Time |
| AHIT | American High Income Trust |
| AHIT | American Home Inspectors Training |
| AHJ | Agent Having Justification |
| AHJ | Akademia Hatha Jogi |
| AHJ | Albert Hammond Jnr |
| AHJ | Albert Hammond Jr |