The Paralympic Movement is overseen by the International Paralympic Committee and is supported by 17 international federations.
Of the 17 IFs, 11 are shared with Olympic sport, four are Paralympic-sport specific and two represent particular impairment groups (the IPC directly governs eight sports).
Meanwhile, 181 National Paralympic Committees oversee Paralympic sport as a whole in each nation, while National Federations (called National Governing Bodies in the U.S.) often manage the administration of the individual sports on a national level. In the United States, U.S. Paralympics - a division of the USOPC - directly governs six Paralympic sports, while 16 are managed by U.S. Olympic NGBs and five are overseen by designated High Performance Management Organizations.
To learn more, visit the IPC's website here.