TBN may mean:

• Trinity Broadcasting Network, an international religious television network
• The Baseball Network, former US television network
• The Buffalo News, a newspaper

• The Barter Network, a commercial trading network
• Toronto Bicycling Network, a recreational cycling organization
• Total base number, an indicator for the alkalinity of lubricant oil
• Trombone, a musical instrument
• Waynesville-St. Robert Regional Airport