HLP
HLP may refer to:
- Halim Perdanakusuma International Airport, in East Jakarta, Indonesia, IATA code
- Haryana Lokhit Party, a political party; see Haryana Legislative Assembly
- Hepatocyte growth factor-like protein
- Houston Lighting & Power, HL&P, former Texas, US utility
- Huntington Library Press, an American publisher
- .hlp, a file extension for several help file types, including WinHelp