HB or Hb may refer to:

Academia

* H-b index, an extension of the h-index used in determining academic impact * H-B Woodlawn, a secondary education program in Arlington, Virginia, US * Hathaway Brown School, an all-girls private school in Shaker Heights, Ohio, US

Arts and media

* HB (band), a Finnish Christian symphonic metal musical group * Hanna-Barbera, a cartoon studio, later folded into Warner Bros. Animation and Cartoon Network Studios * Heaven Below, an American rock band *Helluva Boss, an adult animated TV show

Businesses and brands

* HB (car), a 1920s automobile * HB (cigarette), a German brand of cigarettes * HB Construction, a private US general contractor construction business * HB Ice Cream, an Irish brand * Asia Atlantic Airlines (IATA code HB) * Hamilton Bradshaw, a London-based private equity firm * Hampton and Branchville Railroad (H&B) * Holland & Barrett (H&B), a UK health food shop chain * Hasbro, an American toy company

Places

* Bremen (state) (license plate: HB), a German state * Croatian Republic of Herzeg-Bosnia * Hawke's Bay Region, a region of New Zealand * Hermosa Beach, California, a city in southern California, US * Hubei (Guobiao abbreviation HB), a province of China * Huntington Beach, California, a city in southern California, US * Switzerland and Liechtenstein (List of aircraft registration prefixes, aircraft registration prefix), distinguished by use of emblems * Zürich Hauptbahnhof (often shortened to HB), the central train station in Zürich, Switzerland

Science and technology

* HB pencil (hard black), a classification of pencils * HB, a flammability rating as set forth in UL 94 * Horizontal branch, in astrophysics * HB, a level in the Brinell scale hardness test

Medicine

* Heart block, cardiovascular system disease that involves the heart's electrical conduction system * Hemoglobin (Hb), group of iron-containing proteins found in most animals which primary function is to carry oxygen to the tissues * Hepatitis B, a human viral infection * His bundle, a specialized collection of cells in the vertebrate heart

Sport

* Half-back line, the positions of three players in Australian rules football * Halfback (American football), an American football position * Half back (association football), another name for a midfielder * Handball (disambiguation), a number of sports * Havnar Bóltfelag, a football team in the Faroe Islands * Herfølge Boldklub, a football team in Denmark * Holstebro Boldklub, a football team in Denmark

People

* H. B. Acton (1908–1974), political philosopher * H. B. Bailey (1936–2003), NASCAR driver * H. B. Higgins (1851–1929), Australian politician * H. B. Reese (1879–1956), candy maker * H. B. Warner (1875–1958), motion picture executive

Politics

* Herri Batasuna, defunct far-left Basque nationalist political party in Spain

Other uses

* Half-board, a housing arrangement in which the host provides only a breakfast and dinner meals