PPH may refer to
Medicine Portopulmonary hypertension Postpartum hemorrhage Primary pulmonary hypertension, see Pulmonary hypertension Procedure for prolapse and hemorrhoids, see Stapled hemorrhoidectomy
Science Pound per hour (symbol pph), mass flow unit (used in aviation to measure fuel flow, for instance) Part per hundred (percentage) People per hour, a measure of the rate of flow of people moving past a fixed point or through a system Propylphenidate, an analogue of methylphenidate
Organisations Patent Prosecution Highway, a set of cooperation agreements between some patent offices Permanent private hall, a type of educational institution affiliated to the University of Oxford Palomar Pomerado Health, a public health district in San Diego County, California PeoplePerHour Portland Press Herald, a newspaper in Maine
Transport Parai-tepuí Airport, Venezuela (by IATA code)