Intersputnik
International Organization of Space Communications
IOC
International Olympic Committee
IOM
International Organization for Migration
IPU
Inter-parliamentary Union
ISO
International Organization for Standardization
ISP
Internet Service Provider
ITSO
International Telecommunications Satellites Organization
ITU
International Telecommunication Union
ITUC
International Trade Union Confederation, the successor to ICFTU
(International Confederation of Free Trade Unions) and the WCL (World
Confederation of Labor)