| IBSF | Interconnected Banyan Switching Fabric 
| Others |
| IBSF | International Billiard Snooker Federation
| Others |
| IBSF | International Billiards and Snooker Federation
| Others |
| IBSF | International Billiards Snooker Federation
| Others |
| IBSF | International Blind Sports Federation
| Others |
| IBSF | International Bobsleigh and Skeleton Federation
| Others |
| IBSF | International Bobsleigh Skeleton Federation
| Others |
| IBSF | International Building Systems Factory
| Others |
| IBSF | Ishahayi Beach School Foundation
| Others |