SBN can mean:

• Naval Aircraft Factory SBN, a scout/torpedo bomber from the mid-1930s
• SB Nation, a sports news website owned and operated by Vox Media
• SBN, the IATA airport code for the South Bend International Airport
• Sehar Broadcasting Network, a television channel in Pakistan
• Small Business Network, a business-oriented social networking site owned by PCM, Inc.
• Society for Behavioral Neuroendocrinology
• Sonlife Broadcasting Network, a network of the Jimmy Swaggart Ministries
• Southern Broadcasting Network, in the Philippines
• Standard Beatbox Notation, a form of beatboxing notation
• Standard Book Numbering, a commercial book identifier which developed into the ISBN system
• Strontium barium niobate, a crystal displaying a strong photorefractive effect
• Student Broadcast Network, a former radio network in the United Kingdom
• Subtract and branch if negative, a single machine language opcode sufficient to create a general-purpose computer
• Supervision Broadcasting Network, a television channel in Mongolia

• Post-marketing surveillance
• Postmarking
• Post marks
• Postmarxism
• Postmasburg
• Postmasburg, Northern Cape
• Postmastectomy lymphangiosarcoma
• Post-mastectomy lymphedema
• Postmastectomy lymphedema
• Post Master General
• Postmaster General (disambiguation)
• Postmaster General of Ceylon
• Postmaster General of England
• Postmaster General of Great Britain
• Postmaster General of Sri Lanka
• Postmaster General of the Irish Free State
• Postmaster of New York City
• Postmasters
• Postmasters General of Ireland
• Postmateriality
• Postmature birth
• Postmaturity
• Post maturity syndrome
• Post-maturity syndrome
• Postmedia