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GEOS may refer to:

Computer software[edit]


  • GEOS (eikaiwa), an English conversation teaching company based in Japan
  • GEOS circle, an intersection of four lines that are associated with a generalized triangle
  • GEOS (satellite), a research satellite from ESRO (1978–1982)
  • GEOS-3 (Geodynamics Experimental Ocean Satellite), a research satellite from NASA
  • Groupe GEOS, a French business consultancy