Transportation
- Air Tanzania IATA code
- TC, a Mazda piston engine
- Chrysler TC by Maserati, an automobile sold by Chrysler from 1989-1991
- Twincam, an alternative term for an overhead camshaft (OHC) engine
- Scion tC, a touring coupe made by Scion that's based on the Toyota Avensis
- Traffic collision, an automobile accident
- Traction control system, an anti-slip automobile subsystem
- Turn coordinator, an aircraft instrument
- True Course, an angle for True north in Course (navigation)
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