A credit card organization, referred to as a card organization, is an international or regional card issuing organization composed of members. It authorizes members to issue cards, accept card transactions from merchants, and own and operate its own international regional processing network. Credit card organizations are responsible for establishing and operating a unified global or regional payment card information exchange network, undertaking payment card transaction information and fund settlement work; formulating and promoting business specifications and technical standards for inter-bank payment card transactions. In a general sense, all credit card clearing and regulatory agencies and rule makers.

There are currently five international credit card brands:

VISA International

MasterCard International

American Express International Co., Ltd. (AmericaExpress)

Diners Club Co., Ltd. (DinersClub)

JCB Japan International Credit Card Co., Ltd. (JCB)

These are five Professional credit card company. There are also regional credit card organizations in various places, such as European EUROPAY, China UnionPay, Taiwan United Credit Card Center, etc.