GHY

GHY or Ghy can refer to:


 * Gibbons-Hawking-York boundary term, a mathematical expression in general relativity for space-times with boundary
 * Grand Hotel Yerevan, a hotel in Yerevan, Armenia
 * German Sky Airlines, a defunct airline from Germany, by ICAO code; see List of defunct airlines of Germany
 * Guwahati railway station, a train station in Guwahati, Assam, India
 * Glen Huntly railway station, a train station in Glen Huntly, Victoria, Australia
 * Grokhovskyite, a mineral; see List of mineral codes