Since its humble beginnings with 6 participating countries in 1990, IBO has grown to a large worldwide community with nearly 80 members. The IBO is organized into an official IBO Association with its legal seat in Kiel, Germany. All registered IBO Member countries/regions are listed below. Every year our family grows with one or more countries/regions (shown as Pending members).

If your country/region is not shown yet, but you want to join the IBO, please see here for more information.