IBD may refer to:
Medicine Inflammatory bowel disease, a group of inflammatory conditions of the large and small intestines
Organisations Investment Banking Division, a department of an investment bank Independent Bicycle Dealers, a small bicycle business Institute of Brewing and Distilling, an international industry trade association
Science Identity by descent, alleles that are identical because they descended directly from the same ancestral allele Inclusion body disease, a destructive virus occurring in boid snakes Infectious bursal disease, a poultry disease causing immunosuppression Inverse beta decay, a nuclear reaction commonly used in neutrino detectors Iodobenzene dichloride, a reagent used in organic chemistry Ion beam deposition
Other International Beer Day, an August 5 celebration India's Best Dancer, a dance reality show Investor's Business Daily, a national newspaper in the United States