- TPU
- TQFT
- TQM
- TRAF
- TRH
- TRIGA
- TRL
- TRP
- TRPA1
- TRPC6
- TRPM8
- TRPS
- TRPV1
- TRPV4
- TSA
- TSFC
- TSH
- TSLP
- TSN
- TSO
- TSS
- TSV
- TTA
- TTG
- TTI
- TTL
- TVD
- TWIP
- TWT
- TZP
- Tabby concrete
- Table extraction
- Table of contents
- Tablelands
- Tablet
- Tablet computers
- Tablets
- Tableware
- Tabs
- Tabu search
- Tabulating machines
- Tacheometry
- Tachographs
- Tachometer
- Tachycardia
- Tachypnea
- Tackifier
- Taconite
- Tacrine
- Tacrolimus