BSN

BSN is a three-letter abbreviation that may refer to:

• Biotechnology Society of Nepal, a Non-profit Biotechnology Organization
• Baloncesto Superior Nacional, basketball league in Puerto Rico
• Bank Simpanan Nasional, the government-owned bank in Malaysia
• The French food and beverage company Boussois-Souchon-Neuvesel (Groupe Danone since 1994)
• Bachelor of Science in Nursing
• Bassoon
• Blue Square North, the current sponsored name of one of the two leagues that form the second-highest level of non-league football in England
• Body sensor network
• Burgerservicenummer
• A school, The British School in the Netherlands
• Broadcasting System of Niigata, a Japanese TV station
• Bioware Social Network