| Author (and author names) | Published between | No. of references | No. of described taxa (valid) |
|---|---|---|---|
| Jolivet, P. | 1986–1996 | 3 | – |
| Joly, S. | 1963 | 1 | – |
| Joma, A. M. A. | 2013–2020 | 4 | 4 |
| Jonathan, J. K. | 1986 | 2 | – |
| Jones, A. | 1996 | 1 | – |
| Jones, G. R. | 2008 | 1 | – |
| Jones, J. W., Jr.; Jones, J. W. | 1943–1948 | 2 | – |
| Jones, M. K. | 1993 | 1 | – |
| Jones, M. M. | 2023 | 1 | – |
| Jones, R. A. | 1996–1998 | 2 | – |
| Jones, R. G. | 1978 | 1 | – |
| Jones, S. R. | 1985 | 1 | – |
| Jones, T. H.; Jones, T.H. | 1982–2021 | 30 | – |
| Jong, G. de | 1988 | 1 | – |
| Jongepier, E. | 2014 | 1 | 1 |
| Jonkman, J. C. M. | 1979 | 1 | – |
| Jordan, K. | 1913–1939 | 4 | – |
| Jordan, K. H. C. | 1968 | 1 | – |
| Jorgensen, C. D. | 1989 | 1 | – |
| Josens, R. | 2011 | 1 | 1 |
| Joseph, G. | 1882 | 1 | – |
| Jouault, C. | 2019–2024 | 5 | 4 |
| Joulie, C. | 1990 | 1 | – |
| Jourdan, H. | 1997–2023 | 7 | – |
| Jørum, P. | 2001 | 1 | – |
| Jucci, C. | 1963 | 1 | – |
| Jules, E. S. | 2005 | 1 | – |
| Julian, G. E. | 1999–2006 | 5 | – |
| Julien, J. F.; Julien, J.-F. | 1998–2004 | 4 | – |
| Jungen, H. | 1976–1983 | 2 | – |
| Jungnickel, H. | 2001–2008 | 3 | – |
| Juniper, B. | 1986 | 1 | – |
| Junqueira, L. K. | 2014 | 1 | – |
| Jurine, L. | 1801–1807 | 2 | 2 |
| Jusino-Atresino, R. | 1992–1994 | 2 | – |
| Just, S. | 1997–1998 | 2 | – |
| Kachonpisitsak, S. | 2022 | 1 | 1 |
| Kaczmarek, W. | 1953 | 1 | – |
| Kadri, A. | 1996 | 1 | – |
| Kadu, S. G. | 2010–2013 | 3 | – |
| Kahle, I. | 1935–1937 | 3 | – |
| Kahono, S. | 2001–2024 | 2 | – |
| Kaib, M. | 1996 | 1 | – |
| Kaisin, M. | 1997 | 1 | – |
| Kaji, T. | 2018 | 1 | – |
| Kalb, R. | 2002 | 1 | – |
| Kallal, R. J. | 2012–2019 | 4 | 20 |
| Kalytta, G. | 2000 | 1 | – |
| Kamal, W. | 2019 | 1 | – |
| Kanao, T. | 2014 | 1 | – |
| Kaneko, G. | 2020 | 1 | – |
| Kaneko, T. | 2001 | 1 | – |
| Kannari, T. | 1980 | 1 | – |
| Kannowski, P. B. | 1954–1997 | 12 | – |
| Kanturski, M. | 2021 | 1 | 1 |
| Kaplin, V. G. | 1989 | 1 | – |
| Kappel, A. W. | 1896 | 1 | – |
| Kapyszewska, E. | 1981 | 1 | – |
| Karaman, C. | 2011–2024 | 26 | 13 |
| Karaman, G. S. | 2003–2005 | 2 | – |