IBR may refer to:
Science and technology Image-based modeling and rendering Internet background radiation Integrally bladed rotor, a turbomachinery component Infectious bovine rhinotracheitis, a herpes-type viral disease of cattle Iodine monobromide (IBr) Inverter-based resource (IBR), a generator connected to the electrical grid through a power converter
Organisations Institute of Boiler and Radiator Manufacturers Institute of Biomedical Research, at the University of Birmingham, UK
Other uses Income-based repayment, a method of student loan repayment in the US
International Bibliography of Book Reviews of Scholarly Literature and Social Sciences Inverted Box Rib, a type of metal roof Ivey Business Review, an undergraduate business publication of Ivey Business School Ibaraki Airport (IATA airport code) Incorporation by reference, the act of including a second document within another document by only mentioning the second document
See also IBRS (disambiguation)