- NASA
- NASA Ames Research Center
- NASA Goddard Institute for Space Studies
- NASA Goddard Laboratory for Atmosphere
- NASA Goddard Space Flight Center
- NASA Headquarters
- NASA Langley Research Center [Hampton]
- NASA Marshall Space Flight Center
- NASA Wallops Flight Facility
- NCAS-Climate [Cambridge]
- NCEP Climate Prediction Center
- NIWA Environmental Research Institute
- NOAA Aeronomy Laboratory
- NOAA Climate Monitoring and Diagnostics Laboratory
- NOAA Earth System Research Laboratory
- NOAA Environmental Technology Laboratory
- NOAA Forecast Systems Laboratory
- NOAA Geophysical Fluid Dynamics Laboratory
- NOAA National Environmental Satellite, Data, and Information Service
- NOAA National Weather Service
- NOAA Pacific Marine Environmental Laboratory [Seattle]
- NOVELTIS [Sté]
- NYU System
- Nagoya University
- National Academy of Sciences of Belarus
- National Academy of Sciences of Kyrgyz Republic
- National Aeronautics and Space Administration, Ames Research Center
- National Astronomical Observatory of Japan
- National Atmospheric Research Laboratory [Tirupati]
- National Center for Atmospheric Research [Boulder]
- National Center for Earth and Space Science Education
- National Central University [Taiwan]
- National Centre for Atmospheric Science [Leeds]
- National Institute for Environmental Studies
- National Institute for Public Health and the Environment [Bilthoven]
- National Institute of Information and Communications Technology [Tokyo]
- National Institute of Polar Research [Tokyo]
- National Institute of Research and Development for Optoelectronics
- National Institute of Standards and Technology [Boulder]
- National Institute of Standards and Technology [Gaithersburg]
- National Institute of Technology Karnataka [Surathkal]
- National Institute of Water and Atmospheric Research [Auckland]
- National Institute of Water and Atmospheric Research [Lauder]
- National Institute of Water and Atmospheric Research [Wellington]
- National Laser Centre [Pretoria]
- National Observatory of Athens
- National Oceanic and Atmospheric Administration
- National Oceanography Centre [Southampton]
- National Optical Astronomy Observatory
- National Remote Sensing Centre [Hyderabad]
- National Research Center "Kurchatov Institute"
- National Research Council of Canada
- National Research Council of Italy | Consiglio Nazionale delle Ricerche
- National Research Institute for Physical-technical and Radiotechnical Measurements
- National Science Foundation [Arlington]
- National Solar Observatory [Tucson]
- National Space Institute [Lyngby]
- National Space Science and Technology Center
- National Technical University of Athens [Athens]
- National University of Ireland Maynooth
- National Weather Service Indianapolis
- National and Kapodistrian University of Athens
- Natural Environment Research Council
- Naval Research Laboratory
- New Mexico Institute of Mining and Technology [New Mexico Tech]
- New Mexico State University
- New York University [New York]
- Normandie Université
- Norsk Institutt for Luftforskning
- NorthWest Research Associates
- Norwegian Defence Research Establishment
- Norwegian Institute for Air Research
- Norwegian Meteorological Institute [Oslo]
- Norwegian Polar Institute