CTB may refer to:

Companies and organizations

  • CTB/McGraw-Hill, a division of the McGraw-Hill Companies
  • California Testing Bureau, a division of the McGraw-Hill Companies
  • Canadian Tire Bank, the retail deposit-taking and credit card-issuing arm of Canadian Tire Corporation, Limited
  • Ceylon Transport Board, the nationalised passenger transport venture in Sri Lanka
  • Christchurch Transport Board, a defunct municipal public transport operator in Christchurch, New Zealand
  • Citybus (Hong Kong), a public bus operator in Hong Kong
  • Cooper Tire & Rubber Company's NYSE ticker symbol
  • CTB International

Science and technology

  • Cement-treated Base, a specific type of soil cement, used as a base
  • Cholera toxin B, a subunit of cholera toxin used for retrograde tracing
  • Coding tree block, a processing unit of the High Efficiency Video Coding (HEVC) video standard
  • .ctb, Color-dependent Plot Style Table, a file extension used by AutoCAD

Places

  • City of Thunder Bay, a Canadian town in Ontario
  • Commonwealth of The Bahamas
  • Crabtree Technology Building, a Brigham Young University building
  • Cut Bank Municipal Airport, an airport near Cut Bank, Montana, U.S., by IATA code
  • Castletownbere or Castletown Berehaven, an Irish town in Co Cork.

Other uses

  • Catch the Beat, an alternative game mode in Dean "peppy" Herbert's osu! rhythm game
  • Comprehensive Test Ban, the goal of the Comprehensive Test Ban Treaty
  • Crash Thunder Buster, a finishing move of Jyushin Thunder Liger
  • Ryan Giggs or CTB, the claimant in CTB v News Group Newspapers and CTB v. Twitter Inc., Persons Unknown