RH

RH, Rh, rH, or rh may refer to:

Companies Red Hat, an American software company Republic Express Airlines (IATA designator), a cargo airline in Indonesia RH (company), an American furniture chain formerly known as Restoration Hardware

Science and technology Relative humidity, a measure of current versus potential humidity Releasing hormone Reproductive health Rh blood group system (Rhesus factor), a classification to describe human blood types Rhodium, symbol Rh, a chemical element RH, the Rydberg constant for hydrogen Riemann hypothesis, an important unsolved problem in mathematics Adobe RoboHelp, an Adobe software

Places RH postcode area, in the UK , an official name of Croatia in Croatian Ruttonjee Hospital, a hospital in Wan Chai, Hong Kong

Other uses Rh (digraph) The Right Honourable, an honorific preceding a name in the UK Radical honesty, the practice of complete honesty DZRH News Television, a news channel in the Philippines previously known as RHTV Richmond Hill line (RH), of the GO Transit rail network in Ontario, Canada

See also DZRH, a Philippine radio station