IYA
| Acronym | Definition |
|---|---|
| IYA | International Year of Astronomy (2009) |
| IYA | In Your Arms (Chris Brown song) |
| IYA | Iyengar Yoga Association (UK) |
| IYA | Irish Yoga Association (est. 1978) |
| IYA | In Your Ass |
| IYA | Islamic Youth Association (various locations) |
| IYA | Index Versus Year Ago |