HF

HF, Hf or hf can refer to:

*Houseman & Falshaw Ltd, A British Construction Company
*Hafnium, a chemical element
*Hartree-Fock, a calculation scheme
*Helicon Filter, photo editing software
*Helicon Focus, a photo-merging program used to increase depth of field or make panoramas
*High frequency, the 3-30 MHz range of radio frequencies
*Hydrogen fluoride, a diatomic compound which can dissolve in water to form hydrofluoric acid, a highly corrosive solution.
*"Højere Forberedelseseksamen" ("Higher Preparatory Examination"), a Danish examination programme
*House Forsaken, one of the oldest gaming clans in the known universe.
*Limited liability company ("Hlutafelag"), in Iceland
*Hapag-Lloyd Flug, a German airline (IATA code) doing business as TUIfly
*Health Trust ("Helseforetak"), a Norwegian hospital enterprise
*Hard-Fi, An English indie rock band
*"Heraldo Filipino", the official student newspaper of De La Salle University-Dasmariñas
*Heritage Front, a white supremacist and Canadian Nationalist group
*Have Fun, common Internet slang
*Herford (district), a district in Germany
*, long-running Star Trek fan-fiction series.
* Half-Forward position in Australian Rules football