Information services and Documentation centres
- Natural Sciences - Basic and Engineering Sciences - Website
- Natural Sciences - Executive Office - Website
- Natural Sciences - Intergovernmental Oceanographic Commission (IOC ) - Website
- Natural Sciences - International Hydrological Programme (IHP) - Website
- Natural Sciences - Man and the Biosphere Programme (MAB) - Website
- Cairo - Regional Bureau for Sciences for the Arab States - Website
- Delft - UNESCO-IHE Institute for Water Education - Website
- Trieste - The Abdus Salam International Center for Theoretical Physics (ICTP) - Website
- Venice - Regional Bureau for Science and Culture in Europe - Website