YI
| Acronym | Definition |
|---|---|
| YI | Yugoslavia (Serbia and Montenegro) |
| YI | Young Israel (aka National Council of Young Israel) |
| YI | Yoshi's Island (video game; sequel to Super Mario World) |
| YI | Youth Initiative (various locations) |
| YI | Yidgha (linguistics) |
| YI | Yeeha Internetan (Cebu internet cafe) |