B103 may refer to:

Radio stations

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  • KBWS-FM (102.9 FM, "Superstar Country B103"), in the Sisseton, South Dakota, area
  • WZKR (103.3 FM, formerly broadcast a country format as B103), in the Meridian, Mississippi, area
  • WGFB (103.1 FM, "The New B103 - Today's Lite Rock"), in the Rockton, Illinois, area
  • WWOF (103.1 FM, formerly WAIB, "New Country B103"), in the Tallahassee, Florida, area
  • KBIU (103.3 FM, formerly "B103 The B"), in the Lake Charles, Louisiana, area
  • WFXD (103.3 FM, formerly "B103" under its country format), in the Marquette, Michigan, area
  • CKQQ-FM, (103.1 FM, "B-103"), in the Kelowna, British Columbia, area
  • WBDX (103.1 FM, "The New B103, The Outrageous FM!"), in the Trenton, Georgia, area