Geoscientist may refer to:

• Geoscientist, a person studying Earth or other planets using Earth science
  • Geochemist (see Geochemistry)
  • Geologist, a scientist who studies the solid, liquid, and gaseous matter that constitutes the Earth and other terrestrial planets
  • Geophysicist (see Geophysics)
  • Planetologist (see Planetary science)
• Geoscientist (magazine), the official membership magazine of the Geological Society of London