HWP may refer to:
Science and technology Half-wave plate, an optical device Hangul (word processor), Korean software Hardy–Weinberg principle, in population genetics
Other uses Heavy weapons platoon Highland Wildlife Park, in Scotland Human Waste Project, an American band Hungarian Workers' Party, a political party Hutchison Whampoa Property, a property developer in Hong Kong
See also Hoop (disambiguation) Hwp1, fungal glycoprotein