GHI may refer to:Gardens for Health International, an American philanthropic organization Gatwick Handling, a British aircraft ground handling agent GeoHazards International, an American disaster preparedness organization German Historical Institutes Ghee, clarified butter Ghost Hunters International, an American television series Global Health Initiatives Global Horizontal Irradiance, the total solar radiation incident on a horizontal surface Global Hunger Index Greenbelt Homes, Inc., an American housing cooperative Group Health Incorporated, an American health insurance company Guitar Hero