FBR may refer to:
Science, medicine, and technology Fast breeder reactor, a type of nuclear reactor Fluidized bed reactor, in chemical engineering Foreign body response, in biology Full bridge rectifier, in electrical circuits
Other uses Beveren railway station, Belgium (station code: FBR) FBR Capital Markets, an American investment banking firm Federal Board of Revenue, central revenue collection agency of Pakistan Foreign Births Register, an Irish government voluntary registry of the second generation of Irish citizens born abroad Fortnite Battle Royale, a video game Foundation for Biomedical Research, an American animal welfare organization Free Burma Rangers, a Burmese humanitarian organization Friedman Billings Ramsey, an American real estate investment trust Fueled by Ramen, an American record label FBR Ltd, formerly Fastbrick Robotics, an Australian construction robot development company