WPA Member Societies are listed in alphabetical order by countries or regions.
| Country or Region | WPA Member Societies |
| Bahrain, Qatar, United Arab Emirates | Arab Gulf Psychiatric Association |
| Bangladesh | Bangladesh Association of Psychiatrists |
| Barbados (WI) | Barbados Association of Psychiatrists |
| Belarus | Byelorussian Psychiatric Association |
| Belgium | Royal Society of Mental Medicine of Belgium |
| Belgium | Society of Flemish Neurologists & Psychiatrists |
| Bolivia | Bolivian Society of Psychiatry |
| Bosnia-Herzegovina | Psychiatric Association of Bosnia-Herzegovina |
| Brazil | Brazilian Association of Psychiatry |
| Brazil | Psychiatric Association of Rio de Janeiro |
| Brazil | Psychiatric Association of Rio Grande do Sul – APRS |
| Bulgaria | Bulgarian Psychiatric Association |
