| Acronym | Definition |
|---|
| MYA | Monterey (Amtrak station code; Monterey, CA) |
| MYA | Million Years Ago |
| MYA | Myanmar (formerly Burma) |
| MYA | Move Your Ass |
| MYA | My Account |
| MYA | Multi-Year Agreement (various locations) |
| MYA | Midwest Young Artists |
| MYA | Move Your Asana (workout) |
| MYA | Miss You Always |
| MYA | Missing You Already |
| MYA | Myasistchev (Soviet aircraft designer) |
| MYA | Moruya, New South Wales, Australia - Moruya (Airport Code) |
| MYA | Minoru Yamasaki Associates (World Trade Center architects) |
| MYA | Market Yield Adjustment (finance) |
| MYA | Mainline Youth Alliance (Wayne, PA) |