- T-tail
- tackle block
- tail lamp
- tail propeller
- takeoff
- takeoff phase
- takeoff speed
- tamper
- tamping bar
- tank saddle
- tapered wing
- tamping pick
- tamping unit
- tank wagon
- tariff reduction
- task force
- tax advoidance
- tax break
- tax evasion
- tax exempt
- taxiing
- taxiway light
- Technical Instruction
- tax schedule
- Taxable income
- technical stop
- switch angle
- switch broom
- switch diamond
- switch element
- switch heel
- switch machine
- switch panel
- switch rail
- switch spindle
- switchpoint light
- swiveling roof
- tack
- taffrail
- tail fin
- tail skid
- tail wheel
- tailplane
- takeoff area
- takeoff run
- tangent length
- tank barge
- tank craddle
- tanker terminal
- tanker truck
- tare
- tare weight
- target stand
- tariff admendment
- tariff classification
- tarpaulin
- tarred rope
- telegraphic transfer
- temporary export
- temporary import
- temporary rail
- tender
- terminal
- termination
- terminal area
- terminals
- test ground
- test section
- test train
- test value
- thermal cracking
- thimble
- third rail
- threaded end
- thickness ratio
- thoroughfare
- through band
- through container
- through train
- through wagon
- throw lever
- tidal capacity
- tidal dock
- tide chart
- tide gate
- tide signals
- tie bar
- tie crane
- tie extractor
- tie plate
- tie screw
- tie screwdriver
- tiller
- tiller rope
- tilt container
- tiltainer
- tilting dozer
- timber
- thruway
- throttle back