| Acronym | Definition |
|---|
| YAF | Yet Another Forum.net (software) |
| YAF | Yokohama Arts Foundation (Japan) |
| YAF | Young America's Foundation |
| YAF | Youth and Family (various locations) |
| YAF | Young Americans for Freedom (political organization formed in 1960s) |
| YAF | Young Arbitrators Forum (International Chamber of Commerce) |
| YAF | Young Architects Forum |
| YAF | Young Adult Fiction (publishing and library science) |
| YAF | Young Adult Friends (conference) |
| YAF | Yankee Air Force |
| YAF | Yet Another Frag (gaming clan) |
| YAF | Yet Another Flow Sensor |
| YAF | You Are Forgiven |
| YAF | Yunnan America Foundation |
| YAF | Youth Aqua Fit |
| YAF | Yuktobanian Air Force (Ace Combat) |
| YAF | Young Attractive Female |