NBI

NBI may refer to:
 * NBI (narrow body implant), or Mini dental implant
 * Narrow-band imaging, an endoscopic method
 * Nemzeti Bajnokság I
 * Nicolas Berggruen Institute
 * Niels Bohr Institute
 * NBI (bank), a state-run Icelandic bank
 * Nation Brands Index
 * Nathaniel Branden Institute
 * National Bridge Inventory
 * National Bureau of Investigation (disambiguation)
 * National Bureau of Investigation (Finland)
 * National Bureau of Investigation (Philippines)
 * National Bureau of Investigation (Ukraine)
 * Network Bootable Image
 * Neutral Beam Injection
 * Nile Basin Initiative
 * Northbound interface
 * National Broadband Ireland, a telecommunications company
 * NBI Incorporated, an American computer company