• Air Force – Office of Scientific Research
• Army – Research Office
• Centers for Disease Control and Prevention
• Defense Advanced Research Projects Agency (DARPA)
• Department of Commerce
• Department of Education
• Department of Energy Grant Support
• Department of Energy Staff Directory
• Department of the Interior
• Bureau of Land Management
  • Bureau of Reclamation
  • Fish and Wildlife Service
  • Geological Survey
  • National Park Service

• Department of Justice
• Environmental Protection Agency (EPA)
  • National Center for Environmental Research
  • Office of Research and Development

• National Aeronautics and Space Administration (NASA)
• National Endowment for the Arts
• National Endowment for the Humanities
  • NEH Deadlines

• National Institutes of Health (NIH)
• National Oceanographic and Atmospheric Administration (NOAA)
• National Science Foundation (NSF)
• Navy – Office of Naval Research
• United States Agency for International Development (USAID)
• United States Department of Agriculture (USDA)
  • Agricultural Research Service
  • Cooperative State Research Education and Extension Services
  • Forest Service