BDI

BDI may refer to:

Science and technology

 * Beck Depression Inventory, a psychometric test for measuring the severity of depression
 * Belief–desire–intention model, a cognitive model developed by Michael Bratman
 * Belief–desire–intention software model, a methodology and framework for programming rational and intelligent agents
 * (bi-directional isolation), an HTML element that isolates an online section of text

Other uses

 * Baltic Dry Index, an economic indicator
 * Brand development index, a measure used in the allocation of media, and promotion for a specific product or service
 * Bundesverband der Deutschen Industrie, Federation of German Industries
 * Burundi (ISO 3166-1 alpha-3 country code)
 * Democratic Union for Integration, the largest Albanian political party in North Macedonia