As of January 1, 2018, the KWPN recognizes all warmblood studbooks that are members of the WBFSH, with the exception of:
- ANCCE (PRE)
- ABPSL (Brazilian Lusitano)
- APSL (Portuguese Lusitano)
- KFPS (Friesian Horse Studbook)
As of January 1, 2018, the KWPN recognizes all warmblood studbooks that are members of the WBFSH, with the exception of:
To promote genetic diversity within harness horse breeding, studbooks may be recognized if their breeding objective closely matches that of the KWPN for harness horses. The following are recognized: