T
- Tern - Taiwan
- Terrot - France (defunct)
- Thomas - USA (defunct)
- Thorn Cycles - UK
- Time - France
- TI Cycles of India - India, owns brands Hercules, BSA, Montra
- Torker - USA
- Trek Bicycle Corporation - USA, also Klein Bikes, LeMond Racing Cycles (both discontinued) and Gary Fisher Bikes
- Triumph Cycle - UK
- Triumph (TWN) - Germany
- Tunturi - Finland
- Turner Suspension Bicycles - USA
Read more about this topic: List Of Bicycle Brands And Manufacturing Companies