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TB or Tb may refer to:

Science and medicine[edit]

Telecommunications and computing[edit]

  • Terabyte (TB), a unit of information (often measuring storage capacity)
  • Terabit (Tb), a unit of information (often measuring data transfer)



  • T.B. (Thompson Brothers), a three-wheeled cyclecar manufactured by Thompson Brothers of Bilston, England, from 1919 until 1924


  • Torpedo boat, a relatively small and fast naval vessel designed to carry torpedoes into battle
  • Boeing TB, an American torpedo bomber biplane designed by the US Navy and built by Boeing in 1927

Other uses[edit]