BSI

BSI is a three letter acronym that can stand for:

• Backside illumination, a type of digital image sensor
• The Baker Street Irregulars, a fictional group featured in Sherlock Holmes stories
• Banca della Svizzera Italiana
• Bentley Systems Inc.
• Bible Society of India
• Bloodstream infection
• Body substance isolation
• Botanical Survey of India
• Bridge Software Institute, University of Florida
• British Solomon Islands, a former territory
• British Standards Institution aka BSI Group, erroneously, 'British Standards Institute'
• Broadcast signal intrusion
• Bundesamt für Sicherheit in der Informationstechnik, the German Federal Office for Information Security
• Business Systems Infrastructure

Also, in certain french cars the term BSi may refer to the Body Control Module.