- NOAA Geophysical Fluid Dynamics Laboratory
- NOAA National Marine Fisheries Service
- Nagoya University
- Nancyclotep- Experimental Imaging Platform = Plate-forme d'imagerie moléculaire
- Nanjing University
- National Academy of Sciences of Ukraine = Національна академія наук України = Académie nationale des sciences d'Ukraine
- National Centers for Coastal Ocean Science
- National Institute for Fusion Science
- National Institute for Public Health and the Environment [Bilthoven]
- National Institute of Advanced Industrial Science and Technology
- National Institute of Water and Atmospheric Research [Wellington]
- National Ocean Service
- National Oceanic and Atmospheric Administration
- National Oceanography Centre
- National Oceanography Centre [Southampton]
- National Research Institute of Fisheries and Environment of Inland Sea, Fisheries Research Agency
- National University of Ireland [Galway]
- National University of Singapore
- Netherlands Institute of Ecology
- Ningbo University of Technology
- North Carolina State University [Raleigh]
- Northeastern University [Boston]