TNB

TNB may stand for:

• Tacoma Narrows Bridge, a bridge in Washington, USA
• TNB frame (Tangent-Normal-Binormal), a mathematical coordinate system
• Tenaga Nasional Berhad, an electricity company in Malaysia
• National Theatre Bucharest (Teatrul Naţional "Ion Luca Caragiale" Bucureşti)
• Thursday Night Baseball
• Tetrazolium Nitroblue
• The Nasty Boys, a professional wrestling tag team