- Tranquil
- Transformation
- Transgress
- Transgressor
- Transiency
- Transient
- Transilating programme
- Transit
- Transition period
- Transitional
- Transitional relief
- Transitive verb
- Translational
- Translator
- Translocation
- Treadmill
- Treasonable
- Treasure
- Treasure hunt
- Treatment
- Trees
- Tribes
- Tribulus
- Tribunal
- Tribute
- Trichiurus
- Trichotillomania
- Tricjster
- Trickle
- Trickle charger
- Tricks of the trade
- Trickster
- Trident
- Trifler
- Trigger something off
- Trigger-happy
- Trigonometry
- Trim with
- Trimmer
- Trinitarianism
- Trinitrotoluene
- Trinket
- Trip
- Trophied
- Trophy
- Tropic of capricorn
- Trot out
- Trunks
- Truss
- Trust
- Trusteeship
- Truth
- Truth to tell
- Truthfully
- Try and try
- Try on
- Try one's best
- Try ones utmost
- Trying
- Tsetse
- Tub
- Tuba
- Tuberculosis
- Tuberous
- Tuft of hair
- Tufted
- Tug-of-war
- Tugboat
- Tuition
- Tuition master
- Tuk tuk
- Tumble
- Tumbler
- Tumbrel
- Tumidity
- Turmeric
- Turmeric powder
- Turn a blind eye
- Turn a person a drift
- Turn against
- Turn around time
- Turn away
- Turn off
- Turn on person
- Turn ones hand to
- Turn ones head
- Turn over in ones mind
- Turn tail
- Turn to
- Turnaround
- Turning point
- Turnspit
- Turntable
- Turquoise
- Turret
- Turreted
- Turtledove
- Tuskless male elephant
- Typification
- Tussock