HPL may refer to:
Businesses Haldia Petrochemicals Limited, an Indian petrochemical company Hutchison Property Limited, now Hutchison Whampoa Property, a property developer in Hong Kong Hindustan Prefab Limited, a project of the Indian Ministry of Housing and Urban Poverty Alleviation
Libraries City of Hialeah Public Library, in Florida, United States Hamilton Public Library (Ontario), in Canada Hartford Public Library, in Connecticut, United States Hershey Public Library, in Pennsylvania, United States Houston Public Library, in Texas, United States
Other uses HPL (programming language), for HP programmable calculators HPL Engine, a series of game engines HPL Engine 1 HPL Engine 2 HPL Engine 3 Hartlepool railway station, England, station code Hermanos de Pistoleros Latinos, a Hispanic-American prison gang High-pressure laminate, a composite material Hockey Premier League, a proposed international league Human placental lactogen (hPL), a hormone High-performance low-power, a TSMC semiconductor wafer type HPL (benchmark), an implementation of the LINPACK computing benchmark H. P. Lovecraft (1890–1937), American author