| policynetwork.net | International Policy Network |
| iwpr.org | Institute for Women's Policy Research |
| istpp.org | Institute of Science, Technology and Public Policy |
| irex.org | International Research & Exchanges Board |
| irc-online.org | IRC - International Relations Center |
| ips-dc.org | The Institute For Policy Studies: The Nation's Oldest Multi-issue Progressi |
| iea.org.uk | Institute of Economic Affairs |
| icsep.org.il | Israel Center for Social & Economic Progress |
| icpd.org | International Center for Peace & Development |
| inura.org | INURA - International Network for Urban Research and Action |
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