HF, Hf or hf can refer to:

Arts and entertainment

HammerFall HammerFall is a Swedish power metal band from Gothenburg. The band was formed in 1993 by ex- Ceremonial Oath guitarist Oscar Dronjak. They have released thirteen studio albums. History Early days (1993–1996) HammerFall was formed when g ...

, a Swedish power metal band *

Hard-Fi Hard-Fi is an English indie rock band, formed in 2003 in Staines-upon-Thames, Surrey. The band consists of Richard Archer ( lead vocals and guitar), Ross Phillips (guitar and backing vocals), Kai Stephens (bass guitar and backing vocals) and S ...

, an English indie rock band * '' Star Trek: Hidden Frontier'', a long-running Star Trek fan-fiction series *

Hi-hat A hi-hat (hihat, high-hat, etc.) is a combination of two cymbals and a pedal, all mounted on a metal stand. It is a part of the standard drum kit used by drummers in many styles of music including rock music, rock, popular music, pop, jazz, an ...

with foot, part of a drum kit

Business

Hlutafélag A business entity is an entity that is formed and administered as per corporate law in order to engage in business activities, charitable work, or other activities allowable. Most often, business entities are formed to sell a product or a serv ...

(hf.), a form of limited liability company in Iceland *

Hapag-Lloyd Flug Hapag-Lloyd Flug GmbH (known as Hapagfly GmbH between 2005 and 2007) was a German leisure airline headquartered in Langenhagen, Lower Saxony, that was originally founded by Hapag-Lloyd and later became a subsidiary of TUI Group. It operated sc ...

, a German airline (former

IATA code IATA codes are abbreviations that the International Air Transport Association (IATA) publishes to facilitate air travel. They are typically 1, 2, 3, or 4 character combinations (referred to as unigrams, digrams, trigrams, or tetragrams, respec ...

) doing business as TUIfly *

Air Côte d'Ivoire Air Côte d'Ivoire is the flag carrier of Ivory Coast, based in Abidjan. The company succeeded the country's former flag carrier Air Ivoire, which went bankrupt in 2011. It started operations on 12 November 2012. History The airline was set up o ...

, an Ivorian airline (IATA code) *

Hedge fund A hedge fund is a Pooling (resource management), pooled investment fund that holds Market liquidity, liquid assets and that makes use of complex trader (finance), trading and risk management techniques to aim to improve investment performance and ...

Education

Higher Preparatory Examination (HF) The Higher Preparatory Examination (in Danish: ''Højere Forberedelseseksamen'' or ''HF'') is a 2-year general upper secondary programme building on to the 10th form of the Folkeskole and leading to the higher preparatory examination (the HF ...

(''Højere Forberedelseseksamen''), a Danish examination programme * ''

Heraldo Filipino Heraldo is a masculine given name. People with that name include: * Heraldo Bezerra (born 1946), Spanish-Brazilian footballer * Heraldo do Monte (active from 1960), Brazilian guitar player * Heraldo Muñoz (born 1948), Chilean permanent representa ...

'', the student newspaper of De La Salle University-Dasmariñas, Cavite, Philippines *

Homewood-Flossmoor High School Homewood-Flossmoor High School (H-F) is a comprehensive public high school in Flossmoor, Illinois, a suburb of Chicago. The school serves an area of nearly , drawing students from Homewood, Flossmoor, and parts of Chicago Heights, Glenwoo ...

, Flossmoor, Illinois

Organizations

Humanity First Humanity First is an international charity that provides disaster relief and long term development assistance to vulnerable communities in 52 countries across 6 continents. The organisation is run by volunteers with diverse skillsets across the wo ...

, an international charitable organisation, which focuses on immediate disaster response and long-term development * Health trust (''Helseforetak''), a Norwegian hospital enterprise *

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 S ...

, a white supremacist and Canadian Nationalist group * ''Hudobný fond'' (Music Fund Slovakia), a presenter of the

ZAI Awards The ZAI Awards (''Hudobný fond'' or HF) are a Slovak music accolade presented by '' Zväz autorov a interprétov populárnej hudby'' (ZAI) to recognize outstanding achievements in the industry for the preceding year in the region. In the early ...

Science and technology

Biology and medicine

Heart failure Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome caused by an impairment in the heart's ability to Cardiac cycle, fill with and pump blood. Although symptoms vary based on which side of the heart is affected, HF ...

Holstein Friesian cattle The Holstein Friesian is an international breed or group of breeds of dairy cattle. It originated in Frisia, stretching from the Dutch province of North Holland to the German state of Schleswig-Holstein. It is the dominant breed in industrial ...

, HF, a breed of cattle *

Steve Biko Academic Hospital Steve Biko Academic Hospital (formerly the Pretoria Academic Hospital and before 1994 called H F Verwoerd Hospital) of Pretoria, South Africa, previously located at what is now Tshwane District Hospital, is a purely tertiary training healthcare ...

, a hospital in Pretoria, South Africa, formerly called ''H F Verwoerd Hospital'' *

Hippocampal formation The hippocampal formation is a compound structure in the medial temporal lobe of the brain. It forms a c-shaped bulge on the floor of the inferior horn of the lateral ventricle. Typically, the hippocampal formation is said to included the dent ...

, region in the brain

Chemistry

Hafnium Hafnium is a chemical element; it has symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dm ...

, symbol Hf, a chemical element *

Hartree–Fock method In computational physics and chemistry, the Hartree–Fock (HF) method is a method of approximation for the determination of the wave function and the energy of a quantum many-body system in a stationary state. The method is named after Douglas ...

, a calculation scheme in the field of computational chemistry *

Hydrogen fluoride Hydrogen fluoride (fluorane) is an Inorganic chemistry, inorganic compound with chemical formula . It is a very poisonous, colorless gas or liquid that dissolves in water to yield hydrofluoric acid. It is the principal industrial source of fluori ...

, HF, a diatomic compound which can dissolve in water to form hydrofluoric acid, a highly corrosive solution *

Hydrofluoric acid Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colorless, acidic and highly corrosive. A common concentration is 49% (48–52%) but there are also stronger solutions (e.g. 70%) and pure HF has a boiling p ...

, HF_(aq), a solution of hydrogen fluoride (HF) in water

Other uses in science and technology

Handsfree Handsfree is an adjective describing equipment that can be used without the use of hands (for example via voice commands) or, in a wider sense, equipment which needs only limited use of hands, or for which the controls are positioned so that the ...

, equipment that can be used without the use of hands *

Helicon Filter Helicon Filter, also referred to as Helicon, Filter, or as HF, was 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 He ...

, photo editing software *

Helicon Focus Helicon Focus is a proprietary commercial digital image processing tool, first released in 2003, developed and published by Helicon Soft Limited. Like programs such as CombineZ or Zerene Stacker, Helicon Focus is designed to blend the focused area ...

, a photo-merging program used to increase depth of field or make panoramas *

High frequency High frequency (HF) is the ITU designation for the band of radio waves with frequency between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one ...

, the ITU 3–30 MHz radio frequency range (band) *

Hilbert function In commutative algebra, the Hilbert function, the Hilbert polynomial, and the Hilbert series of a graded commutative algebra finitely generated over a field are three strongly related notions which measure the growth of the dimension of the homog ...

of a graded algebra

Sport

* Half-Forward, an Australian Rules football position *

Heinz Field Acrisure Stadium, formerly (and still colloquially) known as Heinz Field, is a football stadium located in the North Shore neighborhood of Pittsburgh, Pennsylvania. It primarily serves as the home of the Pittsburgh Steelers of the National Foot ...

, a stadium in Pittsburgh, Pennsylvania and the home of the Pittsburgh Steelers

People

* H. F. Verwoerd, a South African Prime Minister *

Harrison Ford Harrison Ford (born July 13, 1942) is an American actor. Regarded as a cinematic cultural icon, he has starred in Harrison Ford filmography, many notable films over seven decades, and is one of List of highest-grossing actors, the highest-gr ...

, American film actor

Other uses

* Have Fun, in

video game slang Since the origin of video games in the early 1970s, the video game industry, the gamer, players, and video game culture, surrounding culture have spawned a wide range of technical and slang terms. 0–9 ...

High five The high five is a hand gesture whereby two people simultaneously raise one hand and slap the flat of their palm against the other. The gesture is often preceded verbally by a phrase like "Give me five", "High five", or "Up top". Its meaning var ...

, celebratory hand gesture *

Hotfix A hotfix is a software update that is released outside the normal update cycle or intended to be applied to a live system; often to fix a bug. Originally, ''hotfix'' referred to patching a ''hot'' system a production server that is actively ser ...

, a software patch to temporarily fix a bug in a product