Chemistry

• Hafnium
  Hafnium
  Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869. Hafnium was the penultimate stable...
  
  , a chemical element
• Hartree–Fock method, a calculation scheme in the field of computational chemistry
• Hydrogen fluoride
  Hydrogen fluoride
  Hydrogen fluoride is a chemical compound with the formula HF. This colorless gas is the principal industrial source of fluorine, often in the aqueous form as hydrofluoric acid, and thus is the precursor to many important compounds including pharmaceuticals and polymers . HF is widely used in the...
  
  , a diatomic compound which can dissolve in water to form hydrofluoric acid, a highly corrosive solution

Computing

• Helicon Filter
  Helicon Filter
  Helicon Filter, also referred to as Helicon, Filter, or as HF, is a proprietary commercial and shareware photo editing software program for Microsoft Windows, similar to such programs as Adobe Photoshop and GIMP, developed and published by Helicon Soft Ltd...
  
  , photo editing software
• Helicon Focus
  Helicon Focus
  Helicon Focus is a proprietary commercial digital image processing tool, first released in 2003, developed and published by Helicon Soft Limited...
  
  , a photo-merging program used to increase depth of field or make panoramas

Technology

• High Frequency (HF)
  High frequency
  High frequency radio frequencies are between 3 and 30 MHz. Also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters . Frequencies immediately below HF are denoted Medium-frequency , and the next higher frequencies are known as Very high frequency...
  
  , the ITU 3–30 MHz RF frequency range (band)

Organizations and groups

• Humanity First
  Humanity First
  Humanity First is an international charitable trust established to promote and safeguard the preservation of human life and dignity. The organisation works with vulnerable communities in over 40 countries spanning 6 continents, and is now registered in 33 countries...
  
  , an international charitable organisation, which focuses on immediate disaster response and long term development
• Health trust
  Health Trust
  Health trust or HF is a health enterprise owned by one of the four regional health authority in Norway, with responsibility for performing a geographic and/or specialist activities of operations on behalf of the regional health authority. There are 43 HFs in Norway, each led by a board of...
  
   (Helseforetak), a Norwegian hospital enterprise
• Heritage Front
  Heritage Front
  The Heritage Front was a Canadian neo-Nazi white supremacist organization founded in 1989 and disbanded around 2005.The Heritage Front maintained a telephone message line with a different editorial each day. The voice on the hotline was Gary Schipper...
  
  , a white supremacist and Canadian Nationalist group

Education

• Higher Preparatory Examination (HF)
  Higher Preparatory Examination (HF)
  The Higher Preparatory Examination is a 2-year general upper secondary programme building on to the 10th form of the Folkeskole and leading to the higher preparatory examination , which qualifies for admission to higher education, subject to the special entrance regulations applying to the...
  
   ("Higher Preparatory Examination"), a Danish examination programme
• Heraldo Filipino
  Heraldo Filipino
  The Heraldo Filipino is the official student newspaper of De La Salle University-Dasmariñas , Cavite, Philippines. It publishes news about on-campus events and issues concerning the Lasallian community....
  
  , the official student newspaper of De La Salle University-Dasmariñas
• Homewood-Flossmoor High School
  Homewood-Flossmoor High School
  Homewood-Flossmoor High School is a public high school in Flossmoor, Illinois, in the Chicago metropolitan area. The majority of HF students live in Flossmoor and nearby Homewood, but the school also serves areas of Olympia Fields, Chicago Heights, Glenwood, and Hazel Crest serving school...
  
  

Business

• HF (hlutafélag), in Iceland, a form of business corporation
  Corporation
  A corporation is created under the laws of a state as a separate legal entity that has privileges and liabilities that are distinct from those of its members. There are many different forms of corporations, most of which are used to conduct business. Early corporations were established by charter...
  
  
• Hapag-Lloyd Flug, a German airline (IATA code) doing business as TUIfly
• Hedge fund
  Hedge fund
  A hedge fund is a private pool of capital actively managed by an investment adviser. Hedge funds are only open for investment to a limited number of accredited or qualified investors who meet criteria set by regulators. These investors can be institutions, such as pension funds, university...
  
  

Music, movies and popular culture

• Hard-Fi
  HARD-Fi
  Hard-Fi are an English indie rock band formed in Staines, Surrey in 2003. The band's members are Richard Archer , Ross Phillips , Kai Stephens and Steve Kemp .They achieved chart success with their third single, "Hard to Beat" and then followed by other successful singles such as...
  
  , an English indie rock band
• Star Trek: Hidden Frontier
  Star Trek: Hidden Frontier
  Star Trek: Hidden Frontier was a Star Trek fan film project. Produced on digital video, the show's sets are almost completely virtual, using a green-screen chroma keyed process to place performers into virtual settings....
  
  , long-running Star Trek fan-fiction series
• Hi-hat
  Hi-hat
  A hi-hat, or hihat, is a type of cymbal and stand used as a typical part of a drum kit by percussionists in R&B, hip-hop, disco, jazz, rock and roll, house, reggae and other forms of contemporary popular music.- Operation :...
  
   with foot, part of a drum kit
• Have Fun, Internet Slang
• HammerFall
  HammerFall
  HammerFall is a power metal band from Gothenburg, Sweden. The band was formed in 1993 by ex-Ceremonial Oath guitarist Oscar Dronjak.- Early days :...
  
  , a Swedish Power Metal band

Sports

• Half-Forward, an Australian Rules football position
• Hockey's Future, a massive internet community dedicated to hockey discussion