International Peace Bureau
- 41 Rue de Zurich, 1201 Geneva, Switzerland
Inter-Parliamentary Union
- Chemin du Pommier 5, 1218 Le Grand-Saconnex, Switzerland
League of Arab States
- Al Tahrir Square, Cairo 11511, Egypt
Non-Aligned Movement
- No permanent headquarters; rotating chair and coordination bureau
Nordic Council of Ministers
- Ved Stranden 18, 1061 Copenhagen K, Denmark
North Atlantic Treaty Organization
- Boulevard Léopold III, 1110 Brussels, Belgium