| Acronym | Definition |
|---|
| IYF➣International Youth Fellowship (various locations) |
| IYF➣International Youth Forum (various organizations) |
| IYF➣International Youth Foundation |
| IYF➣In Your Face |
| IYF➣Is Your Friend (computer geek slang) |
| IYF➣International Year of Freshwater (UN) |
| IYF➣Insert Your Favorite... (fill in the blank) |
| IYF➣It's Your Fault |
| IYF➣ISKCON (International Society for Krishna Consciousness) Youth Forum (religious organization) |