| Author (and author names) | Published between | No. of references | No. of described taxa (valid) |
|---|---|---|---|
| Trojan, P. | 1994 | 1 | – |
| Trontti, K. | 2003–2011 | 3 | – |
| Troppmair, H. | 1979 | 1 | – |
| Trostle, M. R. | 1993 | 1 | – |
| Troya, A. | 2022–2025 | 4 | 5 |
| Trunzer, B. | 1997 | 1 | – |
| Tryon, E. H., Jr. | 1986 | 1 | – |
| Tryon, H. | 1886–1900 | 2 | – |
| Tsai, W.-H. | 2018 | 1 | 1 |
| Tschá, M. K. | 2009 | 1 | – |
| Tschinkel, W. R. | 1987–1999 | 5 | – |
| Tschirnaus, M. | 2001 | 1 | – |
| Tse, C. Y. L. | 2024 | 2 | – |
| Tseng, S.-P. | 2024 | 1 | – |
| Tshiguvho, T. E. | 1999 | 1 | – |
| Tsuji, K. | 1991–2011 | 15 | – |
| Tsuji, N. | 1994–1996 | 2 | – |
| Tsukii, Y. | 1995–2003 | 5 | – |
| Tsutsui, N. D. | 1999–2011 | 8 | – |
| Tsyubik, M. M. | 1988–1990 | 2 | – |
| Tu, A. T. | 1984 | 1 | – |
| Tu, N.-C. | 1974 | 1 | – |
| Tuff, D. W. | 1975 | 1 | – |
| Tukia, H. | 1991–1996 | 2 | – |
| Tulloch, G. S. | 1929–1963 | 11 | – |
| Tunstead, J. R. | 1994 | 1 | – |
| Turnbull, C. L.; Turnbull, C. | 1984–1986 | 3 | – |
| Turner, C. R. | 1998–2024 | 3 | – |
| Turner, G. | 1897 | 1 | – |
| Turner, V. | 1997 | 1 | – |
| Tutt, J. W. | 1905 | 1 | – |
| Tynes, J. S. | 1964 | 1 | – |
| Übler, E. | 1995–1997 | 3 | – |
| Uchida, T. | 1925–1936 | 3 | 1 |
| Udayakantha, W. S. | 2020–2021 | 2 | 2 |
| Uezu, K. | 1976 | 1 | – |
| Ugawa, Y. | 1995–2003 | 5 | – |
| Ugelvig, L. V. | 2008 | 1 | – |
| Uhey, D. | 2020 | 1 | 1 |
| Ullah, S. | 2019 | 1 | – |
| Ulmer, J. M. | 2021 | 1 | – |
| Ulysséa, M. A. | 2012–2024 | 6 | 15 |
| Ulzii, T. | 2024 | 1 | – |
| Umphrey, G.; Umphrey, G. J. | 1988–2006 | 4 | – |
| Unknown | 1902 | 1 | – |
| Ur'ew, I. I. | 1994 | 1 | – |
| Urbain, B. K. | 2000 | 1 | – |
| Urich, F. W. | 1895–1911 | 2 | – |
| Usinger, R. L. | 1966 | 1 | 1 |
| Usma, J. S. | 1997 | 1 | – |
| Uspensky, K. V. | 1990 | 1 | – |
| Uva, P. | 2007 | 1 | – |
| Vaidya, V. G. | 1984 | 1 | – |
| Vail, K. M.; Vail, K. | 1994–1995 | 2 | – |
| Vaisar, T. | 1992 | 1 | – |
| Vakis, A. I. | 2008 | 1 | – |
| Valcurone, M. L. | 1959 | 1 | – |
| Valdez Sanchez, L. I. | 1985 | 2 | – |
| Valentine, E. W. | 1991 | 1 | – |
| Valentini, S. | 1951 | 1 | – |