The Federation consists of full, associate and honorary members.

Full membership is open to all officially recognised breeders' organisations which are authorised to keep a stud book for the Haflinger breed and to their umbrella organisations, provided that their activities involve breeding Haflinger horses and that they comply with the requirements of the WHBSF. Due to their special position, the Provincial Federation of South Tyrol Haflinger Horse Breeders (SHPZV) and the Tyrol Haflinger Horse Breeders Association (HPT) are an exception and can be full members of the WHBSF.

Associate members are natural or legal persons who support the activities of the WHBSF and who agree to adhere to the WHBSF regulations.

Honorary membership is reserved to natural persons who have been appointed as honorary members for having rendered special services to the Haflinger breed. They are invited to the General Assembly but have no voting rights.