HRF

HRF may refer to:

Croatian Radio Festival (Croatian: ) Haemodynamic response function Haiti Reconstruction Fund Heterocyclic ring fission, a fragmentation scheme in mass spectrometry; see A-type proanthocyanidin Hind Rajab Foundation Homeland Reserve Forces, a branch of the Republic of Korea Reserve Forces Hormone-releasing factor, hormones whose main purpose is to control the release of other hormones Hostage Rescue Force, an Egyptian police unit Hostile Resting Face, an unintentionally annoyed-looking facial expression HRF, a Rockwell scale of materials' hardness Human-Readable Format Human Relief Foundation Human Rights First Human Rights Foundation Human Rights Foundation (New Zealand) Swedish Hotel and Restaurant Workers' Union (Swedish: ) Hailemariam and Roman Foundation