| Henicospora P. M. Kirk & B. Sutton, 1980 |
| Henicospora minor P. M. Kirk & B. Sutton, 1980 |
| Hermatomyces Speg., 1910 |
| Hermatomyces amphisporus R.F. Castañeda & Heredia, 2000 |
| Hermatomyces sphaericus (Sacc.) S. Hughes, 1953 |
| Hermatomyces tucumanensis Speg., 1911 |
| Heterocyphelium Vain., 1927 |
| Heterocyphelium leucampyx (Tuck.) Vain., 1927 |
| Heteroradulum Lloyd ex Spirin & Malysheva, 2017 |
| Heteroradulum adnatum Spirin & Malysheva, 2017 |
| Heteroradulum lividofuscum (Pat.) Spirin & Malysheva, 2017 |
| Hobsonia Berk. ex Massee, 1891 |
| Hobsonia mirabilis (Peck) Linder, 1929 |
| Hyaloraphidium Pascher & Korshikov, 1931 |
| Hyaloraphidium contortum Pascher & Korshikov, 1931 |
| Hyalosynnema Matsush., 1975 |
| Hyalosynnema multiseptatum Matsush., 1975 |
| Hydnogloea Curr., 1871 |
| Hydnogloea gelatinosa (Scop.) Curr. ex Berk., 1873 |
| Hyphodiscosia Lodha & K. R. C. Reddy, 1974 |