• Glaucospira agilissima Lagerheim, 1892 accepted as Spirulina agilissima (Lagerheim) Kirchner, 1900
• Glaucospira tenuior Lagerheim, 1892 accepted as Spirulina tenuior (Lagerheim) Kirchner, 1900
• Glaucospira yellowstonensis J. Copeland
• Halospirulina tapeticola Nübel et al., 2000
• Spirulina abbreviata Lemmermann
• Spirulina adriatica Hauck, 1890
• Spirulina agilis Kufferath, 1914
• Spirulina agilissima (Lagerheim) Kirchner, 1900
• Spirulina albida Kolkwitz, 1909
• Spirulina ardissoni Cohn
• Spirulina argentina Frenguelli, 1937 accepted as Arthrospira argentina (Frenguelli) Guarrera & Kühnemann, 1949
• Spirulina baltica B. Martens & Pankow
• Spirulina bayannurensis Li et al.
• Spirulina breviarticulata (Setchell & Gardner) Geitler
• Spirulina breviaticulata (Setchell & N.L. Gardner) Geitler, 1932
• Spirulina cabrerae P. González, 1945
• Spirulina caldaria Tilden, 1898
• Spirulina cavanillesiana P. González, 1945
• Spirulina condensata Welsh
• Spirulina corakiana Playfair, 1914
• Spirulina curta (Lemmermann) Geitler, 1925
• Spirulina flavovirens Wislouch, 1911
• Spirulina funiformis Vouk
• Spirulina fusiformis Voronikhin, 1934
• Spirulina gessneri Schiller, 1956
• Spirulina gigantea Schmidle, 1902
• Spirulina gomontiana (Setchell) Geitler, 1925
• Spirulina gomontii Guwinski, 1902
• Spirulina gordiana P. González, 1945
• Spirulina gracilis Gruia, 1961
• Spirulina gracillima Rabenhorst
• Spirulina innatans Welsh
• Spirulina jenneri (Stizenberger) Geitler, 1925
• Spirulina labyrinthiformis (Linnaeus) Gomont, 1892
• Spirulina laxa G.M. Smith, 1916
• Spirulina laxissima G.S. West, 1907
• Spirulina legitima Schiller, 1956
• Spirulina magnifica (Copeland) Anagnostidis, 2001
• Spirulina maior Kütz. accepted as Spirulina major Kützing ex Gomont, 1892
• Spirulina major Kützing ex Gomont, 1892
• Spirulina major Kützing, 1843 accepted as Spirulina major Kützing ex Gomont, 1892
• Spirulina margaritae Frémy, 1927
• Spirulina mariae Margalef
• Spirulina massartii (Kufferath) Geitler, 1925
• Spirulina maxima (Setchell & N.L. Gardner) Geitler, 1932
• Spirulina mediteranea K.N. Deckenbach
• Spirulina mediterranea K.N. Deckenbach
• Spirulina meneghiniana (Zanardini) Zanardini, 1847 accepted as Spirulina meneghiniana Zanardini ex Gomont, 1892
• Spirulina meneghiniana Zanardini ex Gomont, 1892
• Spirulina miniata Hauck, 1878
• Spirulina minima A. Wurtz
• Spirulina mukdensis Noda, 1963
• Spirulina nodosa Schiller, 1956
• Spirulina nordstedtii Nordstedt ex Gomont, 1893
• Spirulina oceanica (P.L. Crouan & H.M. Crouan) P.L. Crouan & H.M. Crouan, 1854 accepted as Spirulina subsalsa Oerstedt ex Gomont, 1892
• Spirulina okensis (C. Meyer) Geitler, 1932
• Spirulina oscillarioides Turpin ex Gomont
• Spirulina oscillariorides Turpin, 1827 accepted as Spirulina major Kützing, 1843 accepted as Spirulina major Kützing ex Gomont, 1892
• Spirulina platensis (Gomont) Geitler, 1925 accepted as Arthrospira platensis (Nordstedt) Gomont, 1892 accepted as
• Spirulina princeps W. West & G.S. West, 1902
• Spirulina pseudotenuissima P.L. Crouan & H.M. Crouan
• Spirulina pseudovacuolata Utermöhl, 1924
• Spirulina regis L. Hoffmann
• Spirulina rhaphidioides Geitler, 1959 accepted as Pseudanabaena raphidioides (Geitler) Anagnostidis & Komárek, 1988
• Spirulina robusta Welsh
• Spirulina rosea P.L. Crouan & H.M. Crouan ex Gomont, 1892
• Spirulina rosea P.L. Crouan & H.M. Crouan, 1867
• Spirulina schroederi Koppe, 1924
• Spirulina sigmoidea Schiller, 1956
• Spirulina socialis N.L. Gardner
• Spirulina spirulinoides (Ghose) Geitler, 1925
• Spirulina subsalsa Oersted, 1842
• Spirulina subsalsa Oerstedt ex Gomont, 1892
• Spirulina subtilissima Kützing ex Gomont, 1892
• Spirulina subtilissima Kützing, 1843
• Spirulina supersalsa Schiller, 1956
• Spirulina tenerrima Kützing ex Gomont, 1892
• Spirulina tenerrima Kützing, 1843
• Spirulina tenuior (Lagerheim) Kirchner, 1900
• Spirulina tenuis (Brühl & Biswas) Geitler, 1925
• Spirulina tenuissima Kützing, 1836
• Spirulina thermalis Meneghini ex Gomont
• Spirulina turfosa P.L. Crouan & H.H. Crouan
• Spirulina undulans K.N. Deckenbach
• Spirulina versicolor Cohn ex Gomont, 1892
• Spirulina weissii Drouet