China 
Africa 
- Topical antifungal drugs
- Topical corticosteroids
- Topical cream formulation
- Topical drug delivery
- Topical gels
- Topical glucocorticoids
- Topical hydrocortisone
- Topical treatment
- Topilutamide
- Topiramate
- Topographical disorientation
- Topoisomerase
- Topoisomerase inhibitor
- Topological index
- Topology
- Topotecan
- Torasemide
- Torcetrapib
- Toremifene
- Toric lens
- Toripalimab
- Toronto Alexithymia Scale
- Torovirus
- Torque teno virus
- Torrance Tests of Creative Thinking
- Torreya nucifera
- Torsades de pointes
- Torsion
- Torsion dystonia
- Torso
- Torticollis
- Torulaspora
- Torus palatinus
- Torus tubarius
- Tositumomab
- Tosufloxacin
- Total Worker Health
- Total anterior circulation infarct
- Total body irradiation
- Total complement activity
- Total contact casting
- Total disc replacement
- Total fertility rate
- Total internal reflection
- Total internal reflection fluorescence microscope
- Total iron binding capacity
- Total iron-binding capacity
- Total knee arthroplasty
- Total lung capacity
- Total mesorectal excision
- Total peripheral resistance
- Total synthesis
- Totally implantable cochlear implant
- Totipotent
- Totipotent stem cells
- Touch receptors
- Tourette syndrome
- Tourette's syndrome
- Tourniquet
- Tourniquet test
- Touton giant cells
- Tower of London test
- Townes-Brocks syndrome
- Toxalbumin
- Toxaphene
- Toxemia
- Toxic
- Toxic alcohol
- Toxic amblyopia
- Toxic encephalopathy
- Toxic epidermal necrolysis
- Toxic equivalency factor
- Toxic gas
- Toxic granulation
- Toxic injury
- Toxic leukoencephalopathy
- Toxic masculinity
- Toxic megacolon
- Toxic metals
- Toxic multinodular goitre
- Toxic oil syndrome
- Toxic shock syndrome
- Toxic waste
- Toxicant
- Toxicity
- Toxicity class
- Toxicity test
- Toxicity testing
- Toxicodendron
- Toxicodendron vernicifluum
- Toxicodynamics
- Toxicogenomics
- Toxicokinetics
- Toxicology
- Toxicophore
- Toxidrome
- Toxification
- Toxinology
- Toxins
- Toxocara canis
- Toxocara cati
- Toxocariasis
- Toxoflavin
- Toxoids
- Toxophore
- Toxoplasma gondii
- Toxoplasmosis
- Tozasertib
- Trabectedin
- Trabectome
- Trabecular
- Trabecular bone
- Trabecular bone score
- Trabecular meshwork
- Trabeculectomy
- Trabeculoplasty
- Trace amine-associated receptors
- Trace amines
- Trace elements
- Trace metals
- Traceability
- Tracheal
- Tracheal agenesis
- Tracheal cytotoxin
- Tracheal deviation
- Tracheal intubation
- Tracheal rings
- Tracheal stenosis
- Tracheal tube
- Trachealis muscle
- Tracheitis
- Tracheo-oesophageal puncture
- Tracheobronchial injury
- Tracheobronchial lymph nodes
- Tracheobronchitis
- Tracheobronchomalacia
- Tracheobronchomegaly
- Tracheobronchopathia osteochondroplastica
- Tracheoesophageal fistula
- Tracheomalacia
- Tracheostomy
- Tracheostomy tube
- Tracheotomy
- Trachoma
- Track and trace
- Tracking
- Traction alopecia
- Traction splint
- Tractography
- Traditional Chinese medicine