• Telospora J.C. Arthur, 1906 accepted as Uromyces (Link) Unger, 1833
• Thecaspora W.C. Elsik, 1966 †
• Thecipora † (uncertain)
• Theclospora H.W. Harkness, 1884 accepted as Emericella M.J. Berkeley, 1857
• Thecospira Zugmayer, 1880 †
• Thekopsora Magnus, 1875
• Thelepora Fries, 1847 (unaccepted)
• Theodora Medikus, 1786 (unaccepted)
• Theopera Haeckel, 1881
• Theostoma Eisig, 1914 (uncertain)
• Thoscora Schaus, 1904
• Thymospora L.R. Wilson & B.S. Venkatachala, 1963 †
• Thyrospora Kirschstein, 1938 [Family: Dothideales incertae sedis]
• Thyrospora L.R. Tehon & E.Y. Daniels, 1925 accepted as Stemphylium Wallroth, 1833 [Family: Pleosporaceae]
• Tinospora Miers, 1851
• Topospora E.M. Fries, 1836
• Toxospora Kudo, 1925 accepted as Toxoglugea Léger & Hesse, 1924
• Toxospora Voronin, 1993
• Tretospora M.B. Ellis, 1976
• Tylospora Donk, 1960