QH may refer to:

  • Air Florida former IATA airline designator
  • Kyrgyzstan (airline) current IATA airline designator
  • American Quarter Horse, a breed of racing horses
  • Qinghai, cf. CPG website
  • Quinoline, a chemical compound
  • Quaque hora, a medical abbreviation from the Latin phrase for "each hour" (used for prescribing)
  • ATCvet code QH Systemic hormonal preparations, excluding sex hormones and insulins, a section of the Anatomical Therapeutic Chemical Classification System for veterinary medicinal products