CYI
| Acronym | Definition |
|---|---|
| CYI | Cape York Institute (Australia; indigenous policy reform) |
| CYI | Certified Yoga Instructor |
| CYI | Council for Yukon Indians (est. 1973; Canada) |
| CYI | Chinatown Youth Initiatives |
| CYI | China Yuchai International Ltd. (est. 1993; Singapore) |
| CYI | Can You Imagine |
| CYI | Children and Youth Initiative (various locations) |