HH may refer to:
The h/h blood group, also known as Oh or the Bombay blood group, is a rare blood type. This blood [phenotype] was first discovered in Bombay, now known as Mumbai, in India, by Dr.Y.M.Bhende in 1952.
The HH Ferry route (About the name: Helsingør - Helsinborg; Helsingør is Danish for Elsinore) is a very old shipping route which connects Elsinore (Helsingør) at Zealand, Denmark and Helsingborg, Scania, Sweden across the northern, and narrowest part of the Øresund.
hhgregg, Inc. (formerly Gregg Appliances, Inc.) is an American publicly owned and operated retailer of consumer electronics and home appliances in the Midwest, Northeast, and Southeast United States.
The Hawaii High School Athletic Association (HHSAA) State Football Championship consists of the two games that are played annually to crown the Division 1 and Division 2 state football champions in Hawaii.
Human Herpes Virus (HHV) Infected Cell Polypeptide 0 (ICP0) is a protein, encoded by the DNA of herpes viruses.
HHL Leipzig Graduate School of Management, formerly known as Handelshochschule Leipzig, is a private business school based in Saxony, Germany.
HHhH (in some markets titled The Man with the Iron Heart)is a French biographical war thriller drama film directed by Cédric Jimenez and written by David Farr, Audrey Diwan, and Jimenez.
HHhH is the debut novel of French author Laurent Binet. It recounts Operation Anthropoid, the assassination of Nazi leader Reinhard Heydrich in Prague during World War II.
HHV Capsid Portal Protein, or HSV-1 UL-6 protein, is the protein which forms a cylindrical portal in the capsid of Herpes simplex virus (HSV-1).