SBN can mean:
- Naval Aircraft Factory SBN, a scout/torpedo bomber from the mid-1930s
- Satellite Broadcast Network
- SBN - The IATA airport code for the South Bend Regional Airport.
- Sehar Broadcasting Network, a television channel in Pakistan.
- Supervision Broadcasting Network, a television channel in Mongolia.
- SimBroadcasting Network, a fictional television network channel featured in The Sims 2 PC game.
- Social Business Network, a business-oriented social networking site powered by PC Mall, Inc..
- Society for Behavioral Neuroendocrinology.
- Sonlife Broadcasting Network, a network of the Jimmy Swaggart Ministries
- Southern Broadcasting Network, in the Philippines.
- Standard Beatbox Notation
- Standard Book Numbering or Standard Book Number, which developed into the ISBN system.
- State Bar Number, identification number for lawyers
- Strontium-Barium Niobate, a crystal displaying a strong photorefractive effect.
- Student Broadcast Network.
- subtract and branch if negative - a single opcode instruction sufficient to create a general-purpose computer (as a thought experiment); a programming language has been made to demonstrate this idea.