Members
The current members of IFA (as of the 2019 Congress in Slovenia) are as follows:
| Argentina | Argentine Libertarian Federation (Federación Libertaria Argentina) | FLA |
| Belarus | Belarus Anarchist Black Cross | BABC |
| Brazil | Iniciativa Federalista Anarquista no Brasil | IFAb |
| Britain | Anarchist Federation | AF / AFed |
| Bulgaria | Federation of Anarchists in Bulgaria (Федерация на анархистите в България) | ФАБ / FAB |
| Croatia & Slovenia | Federation for Anarchist Organizing (Federacija za anarhistično organiziranje) | FAO |
| Czech Republic & Slovakia | Anarchistická federace (Anarchistická Federácia) | AF |
| French-speaking (France, Belgium, Switzerland) | Anarchist Federation (Fédération Anarchiste) | FA / FAF |
| German-speaking (Germany and Switzerland) | Federation of German speaking Anarchists (Föderation deutschsprachiger AnarchistInnen) | FdA |
| Greece | Anarchist Political Organisation (Αναρχική Πολιτική Οργάνωση) | APO / ΑΠΟ |
| Iberia (Spain & Portugal) | Iberian Anarchist Federation (Federación Anarquista Ibérica) | FAI |
| Italy | Italian Anarchist Federation (Federazione Anarchica Italiana) | FAI |
| Mexico | Federation of Anarchists in Mexico (Federación Anarquista de México) | FAM |
| Sicily (membership pending ratification at next IFA Congress) | Sicilian Anarchist Federation (Federazione Anarchica Siciliana) | FAS |
