1. Tribe Antithamnieae Hommersand, 1963
   1. Genus Acrothamnion J.Agardh, 1892
   2. Genus Antithamnion Nägeli, 1847
   3. Genus Hollenbergia Wollaston, 1972
   4. Genus Macrothamnion Wollaston, 1968
   5. Genus Perikladosporon Athanasiadis, 1996
   6. Genus Sporocanthus Kützing, 1855 accepted as Antithamnion Nägeli, 1847
2. Tribe Bornetieae R.N. Baldock & H.B.S. Womersley, 1998
3. Tribe Ceramieae (Dumortier) Schmitz, 1889
   1. Genus Ardreanema R.E.Norris & I.A.Abbott, 1992
   2. Genus Campylaephora J.Agardh, 1851
   3. Genus Carpoblepharis Kützing, 1843
   4. Genus Centroceras Kützing, 1842 '1841'
   5. Genus Centrocerocolax A.B.Joly, 1966
   6. Genus Ceramiopsis Boo & Lee, 1986
   7. Genus Ceramium Roth, 1797
   8. Genus Corallophila Weber-van Bosse, 1923
   9. Genus Gayliella T.O.Cho, L.J.McIvor & S.M.Boo, 2008
   10. Genus Herpochondria F.Schmitz & Falkenberg, 1897
   11. Genus Microcladia Greville, 1830
   12. Genus Pseudoceramium Barros-Barreto & Maggs, 2023
   13. Genus Reinboldiella De Toni, 1895
   14. Genus Sciurothamnion De Clerck & Kraft, 2002
   15. Genus Stirkia Barros-Barreto & Maggs, 2023
   16. Genus Syringocolax Reinsch, 1875
   17. Genus Yoneshiguea Barros-Barreto, Maggs & M.A.Jaramillo, 2023
   18. Genus Ceramiella Børgesen, 1953 accepted as Corallophila Weber-van Bosse, 1923 (synonym)
   19. Genus Cyclospora J.Agardh, 1892 accepted as Carpoblepharis Kützing, 1843 (synonym)
   20. Genus Gloiothamnion T.Reinbold, 1895 accepted as Reinboldiella De Toni, 1895
   21. Genus Draparnaldiana (uncertain)
4. Tribe Dasyphileae Schmitz, 1889
   1. Genus Dasyphila Sonder, 1845
   2. Genus Muellerena F.Schmitz, 1897
   3. Genus Muellerella F.Schmitz ex Kylin, 1956 accepted as Muellerena F.Schmitz, 1897 (synonym)
5. Tribe Dohrnielleae Feldmann-Mazoyer, 1941
   1. Genus Antithamnionella Lyle, 1922
   2. Genus Callithamniella Feldmann-Mazoyer, 1938
   3. Genus Dohrniella Funk, 1922
   4. Genus Haplocladium Nägeli, 1862 accepted as Antithamnionella Lyle, 1922
6. Tribe Heterothamnieae Wollaston, 1968
   1. Genus Acrothamniopsis Athanasiadis & Kraft, 1996
   2. Genus Amoenothamnion Wollaston, 1968
   3. Genus Elisiella Womersley, 1998
   4. Genus Heterothamnion J.Agardh, 1892
   5. Genus Leptoklonion Athanasiadis, 1996
   6. Genus Tetrathamnion E.M.Wollaston, 1968
   7. Genus Trithamnion Wollaston, 1968
7. Tribe Pterothamnieae A. Athanasiadis, 1996
   1. Genus Platythamnion J.Agardh, 1892
   2. Genus Pterothamnion Nägeli, 1855
   3. Genus Glandothamnus Wollaston, 1981 accepted as Pterothamnion Nägeli, 1855 (synonym)
8. Tribe Scagelieae Athanasiadis, 1996
   1. Genus Scagelia E.M.Wollaston, 1972
9. Tribe Scagelothamnieae Athanasiadis, 1969
   1. Genus Scagelothamnion Athanasiadis, 1996

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