HF

HF, Hf or hf can refer to:

• Hafnium, a chemical element
• Hartree–Fock method, a calculation scheme in the field of computational chemistry
• 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
• Higher Preparatory Examination (HF) ("Higher Preparatory Examination"), a Danish examination programme
• Limited liability company, form of business company that provides limited liability to its owners
• 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
• Herford (district), a district in Germany
• Star Trek: Hidden Frontier, long-running Star Trek fan-fiction series
• Half-Forward, an Australian Rules football position
• Homewood-Flossmoor High School
• "have fun" in internet slang, used especially in multiplayer gaming
• an [initial] of a piece of a [drum kit]

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