HB or Hb may refer to:
Media, arts and sciences
HB pencil (hard black), a classification of pencils
Arts and media
Music HB (band), a Finnish Christian symphonic metal musical group Heaven Below, an American rock band
Film and television H. B. Warner (1875–1958), motion picture executive Hanna-Barbera, a former American production company Helluva Boss, an adult animated television series
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
Sciences
Biology Heart block, cardiovascular system disease that involves the heart's electrical conduction system Hemoglobin (Hb), a group of iron-containing proteins found in most animals, whose 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
Material properties HB, a flammability rating as set forth in UL 94 HB, a level in the Brinell scale hardness test
Astronomy Horizontal branch, in astrophysics
Food, housing, politics, and drink HB Ice Cream, an Irish brand Holland & Barrett (H&B), a UK health food shop chain H. B. Reese (1879–1956), candy maker Half-board, a housing arrangement in which the host provides only breakfast and dinner meals HB Construction, a private US general contractor construction business Housing Bureau, a policy bureau of the Government of Hong Kong Herri Batasuna, defunct far-left Basque nationalist political party in Spain H. B. Acton (1908–1974), political philosopher H. B. Higgins (1851–1929), Australian politician HB, logo for the Staatliches Hofbräuhaus in München, also Hofbräu München, a brewery owned by the Bavaria government
Places, transportation, and sports
Hubei (Guobiao abbreviation HB), a province of China Hanuabada, a village in Papua New Guinea, known as HB to the locals Hermosa Beach, California, a city in southern California, US Huntington Beach, California, a city in southern California, US
Aviation Switzerland and Liechtenstein (aircraft registration prefix), distinguished by use of emblems Asia Atlantic Airlines (IATA code HB; ceased) Greater Bay Airlines (IATA code: HB), an airline based in Hong Kong
Rail Zürich Hauptbahnhof (often shortened to HB), the central train station in Zürich, Switzerland Hampton and Branchville Railroad (H&B)
Automotive and sports
Bremen (state) (license plate: HB), a German state HB (car), a 1920s automobile Ford-Cosworth HB engine, a Formula One racing engine H. B. Bailey (1936–2003), NASCAR driver Handball (disambiguation), a number of sports
Player positions 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
Sports teams Havnar Bóltfelag, a football team in the Faroe Islands Herfølge Boldklub, a football team in Denmark Holstebro Boldklub, a football team in Denmark
Other uses Hasbro, an American toy company HB (cigarette), a German brand of cigarettes Hamilton Bradshaw, a London-based private equity firm
See also Hull and Barnsley Railway (H&BR) "2HB", a song by Roxy Music HB2, North Carolina House Bill 2 BH (disambiguation) Њ, Nje, a letter of the Cyrillic script