| Amphora gibba A. Schmidt, 1876 |
| Amphora gigantea Grunow, 1875 |
| Amphora gigantea var. fusca (A. Schmidt) Cleve, 1895 |
| Amphora graeffeana Hendey, 1973 |
| Amphora graeffii (Grunow) Cleve, 1895 |
| Amphora granulata W. Greg., 1857 |
| Amphora grevilleana W. Greg., 1857 |
| Amphora gruendleri Grunow, 1875 |
| Amphora holsatica Hust., 1930 |
| Amphora humicola Grunow, 1875 |
| Amphora humicola var. humicola Grunow, 1875 |
| Amphora humicola var. javanica Grunow, 1875 |
| Amphora hyalina Kütz., 1844 |
| Amphora inariensis K. Krammer, 1980 |
| Amphora inflata Grunow, 1875 |
| Amphora janischii A. Schmidt, 1875 |
| Amphora javanica A. Schmidt, 1875 |
| Amphora laevis W. Greg., 1857 |
| Amphora laevis var. laevissima (W. Greg.) Cleve, 1895 |
| Amphora laevissima W. Greg., 1857 |