TMB may refer to:

Organizations

• Tamilnad Mercantile Bank Limited, India
• Texas Medical Board
• Thai Military Bank
• Transports Metropolitans de Barcelona, Spain

Places

• Kendall-Tamiami Executive Airport near Miami, Florida, US, IATA code
• Tsing Ma Bridge, a longest span suspension bridge in Hong Kong
• Two-Mile Borris, a village in County Tipperary, Ireland

Events

• Tour du Mont Blanc, a walk

Science and technology

• Trimethylborane
• Tumor mutational burden
• 3,3',5,5'-Tetramethylbenzidine, a chemical stain.
• TMB and TMSB series mines

Arts

• The Spirit of Troy, the University of Southern California Trojan Marching Band
• The Midnight Beast, a British comedy music group

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