| HAPS | High Altitude Platform System |
| HDF | Hierarchical Data Format |
| HDFS | High Density Fixed Service |
| HDFSS | High Density Fixed Satellite Systems |
| HDR | High Data Rate |
| HEO | Highly Elliptical Orbit |
| HES | Hyperspectral Environmental Suite (GOES, NOAA) |
| HiRID | High Resolution Imager Data |
| HIRS | High Resolution Infrared Sounder |
| HLPP | (CGMS) High Level Priority Plan |
| HR | High Resolution |
| HRD | High Rate Data (NPOESS, USA) |
| HRDCP | High Rate DCP |
| HRPT | High Rate Picture Transmission |
| HSRS | High Spectral Resolution Sounder (MSG) |
| HWR | Hydrology and Water Resource Programme (WMO) |
| HYDROS | Hydrosphere State Mission (NASA) |
- China Meteorological Administration
- China National Space Administration
- Centre National d'Etudes Spatiales
- The European Space Agency
- EUMETSAT
- India Meteorological Department
- Intergovernamental Oceanographic Commission of UNESCO
- Indian Space Research Organisation
- Japan Aerospace Exploration Agency
- Japan Meteorolocical Agency
- Korea Meteorological Administration
- National Aeronautics and Space Administration
- U.S. National Oceanic and Atmospheric Administration
- Federal Space Agency
- Russian Federal Service for Hydrometeorology and Environmental Monitoring
- World Meteorological Organization