Ta
- Tariccrodium P.Pittau, 1995
Te
- Tectiform_taxa
- Tetracilia
- Tetradimorpha Hsiung, 1927
- Tetramitaceae
- Tetramitia
- Tetramitus Perty, 1852
Th
- Thalassomyxa
- Thecamoeba Fromentel, 1874
- Thecamoebida
- Thecamoebida incertae sedis
- Thecamoebidae Schaeffer, 1926
- Thecamonas
- Thecochaos Page, 1981
- Thecomonadea
- Thranium Hovasse
Tr
- Trachelomonas Ehrenberg, 1835
- Trachydiacrodium E.V.Timofeev
- Trepomonadea
- Trepomonas Dujardin, 1841
- Tricercomitus
- Trichamoeba Fromentel, 1874
- Trichia Haller, 1768
- Trichiida
- Trichoda
- Tricholimax Frenzel
- Trichomastix
- Trichomitus Swezy
- Trichomonadea
- Trichomonadida
- Trichomonas Donné
- Trichonema De Fromentel
- Trichonympha Leidy
- Trichonymphea
- Trichonymphida
- Trichosida
- Trichosidae
- Trichosphaeridium Timofeev
- Trichosphaerium Page, 1983
- Trichozoa
- Trienamoeba Bovee, 1970
- Triflagellum Namyslowski
- Trigonomonas Klebs, 1892
- Trigonopyxidae
- Trimastigida
- Trimastix W.S.Kent
- Trimitoides Pérez Reyes
- Trimitus Alexeieff
- Triporina S.N.Naumova
- Tritrichomonas Kofoid, 1920
- Trochisciaopsis H.Kufferath
- Tropidocyathus
- Tropidoscyphus F.Stein, 1878
- Trypanomonas Danilewsky
- Trypanophis Keysselitz
- Trypanoplasma Laveran & Mesnil, 1901
- Trypanopsis
- Trypanosoma Gruby, 1843
- Trypanosomatida
- Trypanosomatidae Doflein, 1911
- Trypanosomatina
Tu
- Tubifera J.F. Gmel., 1792
- Tubulimonoides R.Krishnamurthy & Sultana
Razred Tubulinea
- Red Arcellinida
- Red Echinamoebida
- Red Euamoebida
- Red Leptomyxida
- Red Nolandida
Protozoa → Sarcomastigota → Amoebozoa → Lobosa
- Tubulospina R.J.Davey
- Turbinella Bory de Saint-Vincent
- Turbomonas Prowse
- Turuchanica
Ty
Tychosporium Spiegel, 1995
- /
Protozoa → Sarcomastigota → Amoebozoa → Amoebozoa incertae sedis → Cavosteliida → Cavosteliida incertae sedis
- Tylosphaeridium Timofeev