Click on the acronyms of the societies below to visit their websites.
- International Federation of Classification Societies (IFCS)
- Italian Statistical Society (SIS)
- Vereniging voor Ordinatie en Classificatie (VOC)
- Associação Portuguesa de Classificação e Análise de Dados (CLAD)
- British Classification Society (BCS)
- The Classification Society (CS)
- Gesellschaft für Klassifikation (GfKl)
- Irish Pattern Recognition and Classification Society (IPRCS)
- Japanese Classification Society (JCS)
- Multivariate Data Analysis Group of the South African Statistical Association (SASA-MDAG)
- Multivariate Statistics and Classification Group of the Spanish Society of Statistics and Operations Research (AMyC-SEIO)
- Sekcja Klasyfikacji i Analizy Danych PTS (SKAD)
- Sociedad Centroamericana y del Caribe de Clasificación y Análisis de Datos (SoCCCAD)
- Société Francophone de Classification (SFC)
- Statistično društvo Slovenije (SdS)