HPD may refer to: 4-Hydroxyphenylpyruvate dioxygenase Helsinki Police Department Hematoporphyrin, organic compound Histrionic personality disorder Honda Performance Development Hours per day, referred to working time HPD series of mines, landmines New York City Department of Housing Preservation and Development Croatian Climbing Society (Hrvatsko planinarsko društvo, HPD)
Transport Haripad railway station, Kerala, India Haripur Band railway station, Punjab, Pakistan Harpenden railway station, Hertfordshire, England (National Rail station code)
US police departments Hagerstown Police Department (Maryland) Hempstead Village Police Department, in New York Henderson Police Department in Nevada Hialeah Police Department, in Florida Hillsboro Police Department (Oregon) Hollywood Police Department (Florida) Holyoke Police Department, in Massachusetts Honolulu Police Department in Hawaii Hoonah Police Department, in Alaska Houston Police Department in Texas