The International Confederation of Wizards is a wizarding intergovernmental organisation, equivalent to the Muggle United Nations (JKR:Tw). The leader of the ICW is called the Supreme Mugwump.
- In 1692, the Confederation introduced the International Statute Secrecy to hide the existence of magic from Muggle eyes (Pm,FB).
- After some attacks by an unknown force in New York City in 1926, the International Federation told MACUSA President Serafina Picquery that they might send a delegation to investigate because they believed the attacks were connected to outlaw wizard Gellert Grindelwald. They were correct (WFT).