| Acrothamnion J. Agardh, 1892 |
| Acrothamnion butlerae (Collins) Kylin, 1956 |
| Antithamnieae Hommers., 1963 |
| Antithamnion Nägeli, 1847 |
| Antithamnion antillanum Børgesen, 1917 |
| Antithamnion breviramosum E.Y. Dawson, 1949 |
| Antithamnion butlerae Collins, 1901 |
| Antithamnion cruciatum (C. Agardh) Nägeli, 1847 |
| Antithamnion decipiens (J. Agardh) Athanasiadis, 1996 |
| Antithamnion defectum Kylin, 1925 |
| Antithamnion dendroideum G.M. Sm. & Hollenberg, 1943 |
| Antithamnion densum (Suhr) M. Howe, 1914 |
| Antithamnion glanduliferum Kylin, 1925 |
| Antithamnion hubbsii E.Y. Dawson, 1962 |
| Antithamnion kylinii N.L. Gardner, 1927 |
| Antithamnion lherminieri (P.L. Crouan & H.M. Crouan) Bornet ex Nasr, 1941 |
| Antithamnion mcnabbii E.Y. Dawson, 1959 |
| Antithamnion pacificum (Harv.) Kylin, 1925 |
| Antithamnion plumula (Ellis) Thur., 1863 |
| Antithamnion pseudocorticatum E.Y. Dawson, 1962 |