• Cycas Linnaeus, 1753
• Cycas aculeata K.D. Hill & H.T. Nguyen
• Cycas acuminatissima H.T. Chang, Y.C. Zhong & Z.F. Lu accepted as Cycas miquelii Warb.
• Cycas acuminatissima H.T. Chang, Y.C. Zhong & Z.F. Lu accepted as Cycas sexseminifera F.N. Wei
• Cycas afra hort. ex J. Schust. accepted as Encephalartos caffer (Thunb.) Lehm.
• Cycas angulata R. Br.
• Cycas apoa K.D. Hill
• Cycas arenicola K.D. Hill
• Cycas armstrongii Miq.
• Cycas arnhemica K.D. Hill
• Cycas aurea hort. Verschaffelt ex Dyer accepted as Cycas siamensis Miq.
• Cycas badensis K.D. Hill
• Cycas baguanheensis L.K. Fu & S.Z. Cheng accepted as Cycas panzhihuaensis L. Zhou & S.Y. Yang
• Cycas balansae Warb.
• Cycas basaltica C.A. Gardner
• Cycas beddomei Dyer
• Cycas bifida (Dyer) K.D. Hill
• Cycas boddami hort. ex Dyer accepted as Cycas beddomei Dyer
• Cycas bougainvilleana K.D. Hill
• Cycas brachycantha K.D. Hill, T.H. Nguyen & K.L. Phan
• Cycas brevipinnata H.T. Chang, Y.Y. Huang & Y.C. Zhong accepted as Cycas miquelii Warb.
• Cycas brevipinnata H.T. Chang, Y.Y. Huang & Y.C. Zhong accepted as Cycas sexseminifera F.N. Wei
• Cycas brunnea K.D. Hill
• Cycas caffra Thunb. accepted as Encephalartos caffer (Thunb.) Lehm.
• Cycas cairnsiana F. Muell.
• Cycas calcicola Maconochie
• Cycas campestris K.D. Hill
• Cycas canalis K.D. Hill
• Cycas candida K.D. Hill
• Cycas celebica Miq. accepted as Cycas rumphii Miq.
• Cycas chamaoensis K.D. Hill
• Cycas chamberlainii W.H. Brown & Kienholz
• Cycas changjiangensis N. Liu
• Cycas chevalieri Leandri
• Cycas circinalis Linnaeus
• Cycas clivicola K.D. Hill
• Cycas cochinchinensis Warb. ex J. Schust. accepted as Cycas siamensis Miq.
• Cycas collina K.D. Hill, T.H. Nguyen & K.L. Phan
• Cycas comorensis Bruant accepted as Cycas thouarsii R. Br. ex Gaudich.
• Cycas condaoensis K.D. Hill & S.L. Yang
• Cycas conferta Chirgwin ex Chirgwin & Wigston
• Cycas corsoniana D. Don accepted as Cycas rumphii Miq.
• Cycas couttsiana K.D. Hill
• Cycas cupida P.I. Forst.
• Cycas curranii (J. Schust.) K.D. Hill
• Cycas debaoensis Y.C. Zhong & C.J. Chen
• Cycas desolata P.I. Forst.
• Cycas diannanensis Z.T. Guan & G.D. Tao
• Cycas dolichophylla K.D. Hill, T.H. Nguyen & K.L. Phan
• Cycas edentata de Laub.
• Cycas elephantipes A. Lindstr. & K.D. Hill
• Cycas elongata (Leandri) D. Yue Wang)
• Cycas elongata (Leandri) D.Y. Yang
• Cycas fairylakea D. Yue Wang
• Cycas fairylakea D.Y. Yang accepted as Cycas taiwaniana Carruth.
• Cycas falcata K.D. Hill
• Cycas ferruginea F.N. Wei
• Cycas fugax K.D. Hill, T.H. Nguyen & K.L. Phan
• Cycas furfuracea W. Fitzg.
• Cycas glauca hort. ex Miq.
• Cycas glaucophylla hort. ex Siebet & Voss accepted as Cycas thouarsii R. Br. ex Gaudich.
• Cycas gracilis Miq. accepted as Cycas media R. Br.
• Cycas guizhouensis K.M. Lan & R.F. Zou
• Cycas guizhouensis Lan & R.F. Zou
• Cycas hainanensis C.J. Chen
• Cycas hamelini hort. ex J. Schust. accepted as Cycas circinalis Linnaeus
• Cycas hoabinhensis K.D. Hill, T.H. Nguyen & K.L. Phan
• Cycas hongheensis S.Y. Yang & S.L. Yang
• Cycas immersa Craib accepted as Cycas siamensis Miq.
• Cycas indica A. Lindstrom & K.D. Hill
• Cycas inermis Lour.
• Cycas javana (Miq.) de Laub.
• Cycas jenkinsiana Griff. accepted as accepted as Cycas pectinata Buch.-Ham.
• Cycas kennedyana F. Muell. accepted as Cycas media R. Br.
• Cycas kirkii hort. ex J. Schust. accepted as Cycas circinalis Linnaeus
• Cycas lane-poolei C.A. Gardner
• Cycas lindstromii S.L. Yang, K.D. Hill & N.T. Hiep
• Cycas lindstromii S.L. Yang, K.D. Hill & T.H. Nguyen
• Cycas litoralis K.D. Hill
• Cycas longiconifera H.T. Chang, Y.C. Zhong & Y.Y. Huang accepted as Cycas segmentifida D.Y. Wang & C.Y. Deng
• Cycas longipetiolula D.Y. Wang accepted as Cycas multipinnata C.J. Chen & S.Y. Yang
• Cycas longisporophylla F.N. Wei accepted as Cycas sexseminifera F.N. Wei
• Cycas longisporophylla F.N. Wei accepted as Cycas miquelii Warb.
• Cycas longlinensis H.T. Chang & Y.C. Zhong accepted as Cycas guizhouensis Lan & R.F. Zou
• Cycas maconochiei Chirgwin & K.D. Hill
• Cycas macrocarpa Griff.
• Cycas madagascariensis Miq. accepted as Cycas thouarsii R. Br. ex Gaudich.
• Cycas media R. Br.
• Cycas megacarpa K.D. Hill
• Cycas micholitzii Dyer
• Cycas micronesica K.D. Hill
• Cycas miquelii Warb.
• Cycas multifida H.T. Chang & Y.C. Zhong accepted as Cycas segmentifida D.Y. Wang & C.Y. Deng
• Cycas multifrondis D.Y. Wang
• Cycas multiovula D. Yue Wang accepted as Cycas guizhouensis K.M. Lan & R.F. Zou
• Cycas multiovula D.Y. Wang accepted as Cycas guizhouensis Lan & R.F. Zou
• Cycas multipinnata C.J. Chen & S.Y. Yang
• Cycas nathorstii J. Schust.
• Cycas necrotic stunt virus
• Cycas neocaledonica Linden accepted as Cycas seemannii A. Braun