Cards SEG Member List
Member entities/Company
| Austria | UniCredit Bank Austria |
| The Netherlands | Betaalvereniging |
| Brazil | Destrava |
| China | |
| Denmark | Modigit Consult AB |
| Finland | |
| France | FrenchSys, CFONB, Groupement des Cartes Bancaires |
| Germany | DIN, SRC Security Research & Consulting |
| United Kingdom | Collingwood Payment Consultants, PAY.UK, Standout Systems |
| Japan | Adyen, MUFG |
| NACHA/IFX Forum | |
| nexo (American Express) | |
| nexo A.I.S.B.L. (nexo standards) | |
| nexo standards | Switstack |
| Republic of Korea | |
| South Africa | PASA, ABSA |
| Sweden | Pan-Nordic |
| Swift | |
| Switzerland | IKEA |
| United States | ASC X9 |
| VISA | |