蘇鐵綱植物傳統分類被分到裸子植物門，但後來發現裸子植物門是個並系群（被子植物也是起源於裸子植物祖先），且各種裸子植物的性質有很大的差別，所以最新的分類方法將其拆分，單獨列為一個蘇鐵門（Cycadophyta）。
滅絕的本內蘇鐵目曾被認為是本類的祖先之一，現在被認為是從其他裸子植物分裂出來，還有人認為是被子植物的祖先或旁系姐妹群。
- 本目包括以下科：
- Beaniaceae
- Crossozamiaceae
- 蘇鐵科 Cycadaceae
- Nilssoniaceae
- 托葉蘇鐵科 Stangeriaceae
- 澤米蘇鐵科 Zamiaceae
- 科的地位未定的屬：
- Acozamites M.D.Zalessky, 1936
- Aldania V.A.Samylina, 1956
- Almargemia Florin, 1933
- Amuriella V.D.Prynada, 1956
- Androcycas J.Watson & S.R.Ash, 2006
- Angaropteris V.A.Chachlov & A.A.Pollack, 1935
- Antarcticycas E.L.Smoot, T.N.Taylor & T.Delevoryas, 1985
- Antherangiopsis Nathorst, 1902
- Anthrophyopsis A.G.Nathorst, 1878
- Archaeocycas S.H.Mamay, 1973
- Aricycas S.R.Ash, 1991
- Baierella R.Potonié, 1933
- Behuninia M.E.J.Chandler, 1966
- Bennettitacearum Gothan, 1914
- Bjuvia R.Florin, 1933
- Blastolepis A.de Zigno, 1885
- Bolbopodium G.Saporta, 1874
- Bucklandiopsis G.Roselt, 1960
- Bureja V.D.Prynada, 1956
- Butefia Dobruskina, 1964
- Calamopsis Heer, 1859
- Carpolithites
- Cavamonocolpites de Lima, 1989
- Charmorgia S.R.Ash, 1985
- Cladophlebidium H.C.Sze, 1931
- Clathropodium Saporta, 1874
- Cloughtonia T.G.Halle, 1911
- Colymbetes M.Stopes, 1915
- Ctenis Lindley & W.Hutton, 1834
- Cycadangium Ogura, 1932
- Cycadella Ward, 1900
- Cycadenia W.Bock, 1969
- Cycadeocarpus Dawson, 1873
- Cycadeoidella Y.Ogura, 1930
- Cycadeomyelon Saporta, 1875
- Cycadeorachis M.Stopes, 1915
- Cycadinorachis B.D.Sharma, 1973
- Cycadites Sternberg, 1825
- Cycadium A.Guillard, 1839
- Cycadocaulum K.Frentzen, 1932
- Cycadophyllum J.G.Bornemann, 1856
- Cycadophytites A.R.Rao & M.N.Bose, 1959
- Cycadopteris A.Zigno, 1853
- Cycadorachis G.Saporta, 1873
- Cyclozamia Pomel, 1849
- Cylindropodium Saporta, 1874
- Delemaya S.D.Klavins, E.L.Taylor, M.Krings & T.N.Taylor, 2003
- Deltolepis T.M.Harris, 1942
- Dioonitocarpidium H.Rühle von Lilienstern, 1928
- Dioonopsis J.Horiuchi & T.Kimura, 1987
- Echinostipes Pomel, 1849
- Encephalartites V.A.Vahrameev, 1962
- Enygmatostrobus A.N.Kristofovic, 1915
- Eucommiidites Erdtman, 1948
- Fricia Velenovský, 1855
- Guilliera L.Crié, 1885
- Guramsania V.A.Vachrameev, E.L.Lebedev & Z.Sodov, 1986
- Gymnovulites V.B.Shukla, 1948
- Haitingeria F.Krasser, 1916
- Harringtonia J.Frenguelli, 1942
- Hastystrobus J.H.A.van Konijnenburg-van Cittert, 1971
- Hauffia Endlicher, 1842
- Heilungia V.D.Prynada, 1956
- Iratinia R.Spiekermann, A.Jasper, A.M.Siegloch, M.Guerra-Sommer & D.Uhl, 2021
- Jeanpaulia F.J.A.N.Unger, 1845
- Jensensispermum M.E.J.Chandler, 1966
- Jurastrobus X.Wang, J.-H.Cui & J.-Z.Cui, 2006
- Keraiaphyllum K.Frentzen, 1932
- Leptopterophyllum H.H.Thomas, 1930
- Lioxylon W.Zhang, Y.Wang, K.Saiki, N.Li & S.Zheng, 2006
- Lunzia F.Krasser, 1916
- Macrotorellia A.N.Kristofovic, 1927
- Mediocycas N.Li, X.-P.Fu, W.Zhang, S.-L.Zheng & Y.Cao, 2005
- Mesosingeria S.Archangelsky, 1963
- Michelilloa S.Archangelsky & D.W.Brett, 1963
- Microzamia A.E.Reuss, 1846
- Morrisia M.N.Bose, 1959
- Nagatocladus T.Ohana, T.Kimura, F.Takahashi & G.Naito, 1996
- Neuropteromedullosa J.P.Lotsy, 1909
- Nidia M.N.Bose & S.C.Srivastava, 1973
- Nikania V.D.Prynada, 1956
- Novoguineoxylon Boureau & Jongmans, 1955
- Ontheodendron B.Sahni & A.R.Rao, 1933
- Osmundites Jaeger, 1827
- Palaeocycas Florin, 1933
- Palaeozamia Endlicher, 1836
- Paracycas T.M.Harris, 1964
- Pecopteromedullosa J.P.Lotsy, 1909
- Phyllopteroides L.M.Medwell, 1954
- Plagiozamiopsis H.C.Sze, 1943
- Pleiotrichium Weyland & Greifeld, 1953
- Plicarizamites W.Bock, 1969
- Poecilitocaulon P.Fliche, 1910
- Pramelreuthia F.Krasser, 1916
- Primocycas J.-N.Zhu & X.-M.Du, 1981
- Pseudocycadeoidea N.K.N.Aiyengar & K.Jacob, 1953
- Pseudocycas Nathorst, 1907
- Pseudodioon B.Erdei, F.Akgün & M.R.B.Lumaga, 2010
- Pseudopterophyllum R.Florin, 1933
- Pseudoptilophyllum F.Krasser, 1918
- Pteronilssonia D.D.Pant & B.Mehra, 1963
- Ptilophyllum J.Morris, 1840
- Ptychoxylon B.Renault, 1889
- Quervainia T.M.Harris, 1932
- Raumeria Göppert, 1853
- Rhipidopsis J.Schmalhausen, 1879
- Rhiptozamites J.Schmalhausen, 1879
- Sanchucycas H.Nishida, M.Nishida & K.Tanaka, 1991
- Sardoa F.Krasser, 1920
- Sarmatiella V.D.Prynada, 1956
- Scalaroxylon D.Vogellehner, 1967
- Schizopodium M.Morière, 1887
- Schozachia B.Rozynek, 2008
- Semionandra V.A.Krassilov & E.V.Bugdaeva, 1988
- Semionogyna V.A.Krassilov & E.V.Bugdaeva, 1988
- Sewardia R.Zeiller, 1900
- Sewardioxylon K.M.Gupta, 1971
- Shuichengoxylon S.-J.Wang, X.-Y.He & L.-Y.Shao, 2011
- Sinoctenis H.C.Sze, 1931
- Sinocycadoxylon W.Zhang & X.-J.Yang, 2012
- Skyttegaardia E.M.Friis, P.R.Crane & K.R.Pedersen, 2021
- Sobernheimia J.H.F.Kerp, 1983
- Stangerites Oldham & Morris, 1863
- Sueria C.A.Menéndez, 1965
- Taeniopteris A.T.Brongniart, 1828
- Tetoria T.Kimura & S.Sekido, 1974
- Triadostrobus W.Bock, 1969
- Vladiloxylon A.Lutz, A.Crisafulli & R.Herbst, 2003
- Yavorskyia G.P.Radczenko, 1936
- Yixianophyllum S.-L.Zheng, N.Li, Y.Li, W.Zhang & X.F.Bian, 2005
- Zamiophyllum A.G.Nathorst, 1890
- Zamiopteris J.Schmalhausen, 1879
- Zamiphyllum R.Caspary & Klebs, 1907
