IBD

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