RRH is the human gene that encodes the visual pigment-like receptor Peropsin.
RRH may also refer to:
Rrh (trigraph) Remote Radar Head, a network of sites used by the British RAF Remote radio head, a type of radio used in wireless telecommunications networks Regesta Regni Hierosolymitani, an 1893 history of the Crusades by Reinhold Röhricht