The acronym RHC may refer to:

• Relativistic heat conduction
• The Black Watch (Royal Highland Regiment) of Canada
• Radio Havana Cuba
• Recueil des Historiens des Croisades, a major collection of medieval primary source documents about the Crusades
• Receding Horizon Control, another name for Model predictive control
• Red Hand Commandos, a Loyalist paramilitary group in Northern Ireland
• Rosehill College, a school in South Auckland
• Rural health clinic
• C-scale of the Rockwell hardness scale
• The Royal Hashemite Court
• Royal Holloway College, University of London