Tachophobia or Tacophobia - Fear of speed.
Taeniophobia or Teniophobia - Fear of tapeworms. (Helminthophobia, Vermiphobia, Scoleciphobia)
Taphephobia or Taphiphobia or Taphophobia - Fear of cemeteries and being buried alive. (Coimetrophobia, Koimetrophobia, Necrophobia, Placophobia)
Tapinophobia - Fear of being contagious.
Taurophobia - Fear of bulls.
Technophobia - Fear of technology.
Teleophobia or Telophobia - Fear of making definite plans or religious ceremonies.
Telephonophobia - Fear of telephones. (Phonophobia)
Teratophobia - Fear of monsters, bearing a deformed child or deformed people.
Testophobia - Fear of taking tests.
Tetanophobia - Fear of lockjaw (tetanus).
Teutophobia or Teutonophobia - Fear of Germany or German culture. (Germanophobia)
Textophobia - Fear of certain fabrics.
Thaasophobia or Thassophobia– Fear of sitting or idleness. (Cathisophobia, Kathisophobia)
Thalassophobia - Fear of seas or oceans or other large bodies of water. (Limnophobia)
Thanatophobia or Thantophobia - Fear of death or dying.
Theatrophobia - Fear of theaters.
Theologicophobia - Fear of theology.
Theophobia - Fear of gods or religion.
Thermophobia - Fear of heat or hot temperatures.
Tocophobia or Tokophobia - Fear of childbirth. (Lockiophobia, Maieusiophobia, Parturiphobia, Teratophobia)
Tomophobia - Fear of surgery or surgical operations.
Tonitrophobia - Fear of thunder.
Topophobia - Fear of certain places or situations, such as stage fright.
Toxiphobia or Toxophobia or Toxicophobia - Fear of poison or being poisoned. (Iophobia)
Traumatophobia - Fear of war or physical injury.
Tremophobia - Fear of trembling.
Trichinophobia - Fear of trichinosis.
Trichophobia or Trichopathophobia - Fear of hair. (Hypertrichophobia, Chaetophobia, Chaeotophobia)
Triskaidekaphobia - Fear of the number 13.
Tropophobia - Fear of moving or making changes. (Metathesiophobia)
Trypanophobia - Fear of injections.
Tuberculophobia - Fear of tuberculosis. (Phthisiophobia)
Tyrannophobia - Fear of tyrants.