As well as a network of local societies throughout the UK, IOM3 has affiliated societies in specific countries throughout the world:
IOM3 is also a member of the following international and national societies and organisations:
- European Ceramics Society
- European Packaging Institute Consortium (EPIC)
- European Federation of Corrosion (EFC)
- Federation of European Materials Societies (FEMS)
- International Rubber Conference Organisation (IRCO)
- Global Mineral Professionals Alliance (GMPA)
- On Pack Recycling Label (OPRL)
- World Packaging Organisation (WPO)