HRB

HRB may refer to:

 HRB (gene)
 HRB Systems, an American defense contractor
 Harrow Road Boyz, a rap collective from London
 Boeing HRB, an American helicopter
 Croatian Revolutionary Brotherhood (Croatian: )
 FBI Human Resources Branch, part of the United States Federal Bureau of Investigation
 H&R Block, a U.S. tax preparation and personal finance management company
 Hazard reduction burning, also known as controlled burn
 Harbin Taiping International Airport, in Heilongjiang, China
 Health Research Board, an Irish research support quango
 House of Responsibility in Braunau am Inn, a political project to be installed in Hitler's house
 HRB, a Rockwell scale used to measure the hardness of materials
 High-speed rotary bonder, see: High Speed Strap Attach Machine
 Heat retention balls used to reduce evaporation, fumes, or sometimes waterfowl.