HB may refer to:
Home Box Office (HBO) is an American premium cable and satellite television network of Home Box Office, Inc..
HBOS plc is a banking and insurance company in the United Kingdom, a wholly owned subsidiary of the Lloyds Banking Group, having been taken over in January 2009. It is the holding company for Bank of Scotland plc, which operates the Bank of Scotland and Halifax brands in the UK, as well as HBOS Australia and HBOS Insurance & Investment Group Limited, the group's insurance division.
HBO (Home Box Office), which was originally established as a premium cable television channel in the United States, has expanded worldwide.
Beta globin (also referred to as HBB, β-globin, haemoglobin beta, hemoglobin beta, or preferably haemoglobin subunit beta) is a globin protein, which along with alpha globin (HBA), makes up the most common form of haemoglobin in adult humans, the HbA.
HBO Go is a TV Everywhere service offered by the American premium cable network HBO, owned by WarnerMedia subsidiary Home Box Office, Inc.
HBO Asia (formerly known as MovieVision, officially launched on 1 May 1992 and officially dissolved on 31 May 1995) is owned by HBO.
HBO Canada is a multiplex television channel of the Canadian premium cable and satellite television service The Movie Network (TMN), which is owned by Bell Media.
HB Grandi hf. is a fishing and fish processing company in Iceland. HB Grandi's headquarters are in Reykjavík where its office and groundfish production are located.