HRR

HRR may refer to:

• Haploid-relative-risk, a method for determining gene allele association to a disease
• Hardy, Rand & Rittler pseudoisochromatic plates, a type of color vision test
• Harrington railway station, in England
• Henley Royal Regatta
• Healy River Airport, in Alaska, United States
• Heart rate reserve
• Hirzebruch–Riemann–Roch theorem
• Historicorum Romanorum reliquiae, a collection of ancient fragmentary Latin history-works
• The History of Rock and Roll, a radio documentary
• Holy Roman Empire (German: Heiliges Römisches Reich)
• Homologous recombination repair, a major DNA repair pathway that mainly acts on double-strand breaks and interstrand crosslinks
• Hondo Railway, an American railway
• Horuru language, spoken in Indonesia

This disambiguation page lists articles associated with the title HRR.
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