Ca
- Caespitella Vischer, 1933
- Callipsygma J.Agardh, 1887
- Callisphenus Høeg
- Calomena J.E.Gray, 1866
- Capsosiphon Gobi, 1879
- Capsosiphonaceae V.J. Chapman, 1952
- Carpathea O.Dragastan
- Carpathocodium O.Dragastan, 1985
- Carteria Diesing, 1866
- Carteriaceae Pascher
- Catena Chodat, 1900
- Catenococcus F.Hindák, 1977
- Catenocystis F.Hindák, 1988
- Caulerpa
- Caulerpa J.V. Lamouroux, 1809
- Caulerpaceae
- Caulerpaceae Kützing, 1843
- Caulerpales
- Caulerpella
- Caulerpella Prud’homme van Reine & Lokhorst, 1992
- Caulodendron A.Comas, 1992
Ce
- Cecidochloris Skuja, 1948
- Cedercreutziella Vischer, 1960
- Centromonas
- Cephaleuros Kunze ex E.M.Fries, 1832
- Cephalomonas Higinbotham, 1942
- Cerasterias Reinsch, 1867
Ch
- Chaetetes
- Chaetochloris Pascher & Korshikov, 1932
- Chaetocladiella C.Meyer & A.P.Skabichevskij, 1968
- Chaetocladus R.P.Whitfield
- Chaetomnion Skuja, 1937
- Chaetomorpha Kützing, 1845
- Chaetonella Schmidle, 1901
- Chaetonema Nowakowski, 1876
- Chaetonemopsis L.Gauthier-Lièvre, 1954
- Chaetopeltidaceae G.S. West, 1904
- Chaetopeltidales
- Chaetopeltis
- Chaetopeltis Berthold, 1878
- Chaetophora Schrank, 1783
- Chaetophoraceae Greville, 1824
- Chaetophorales
- Chaetosiphon Huber, 1893
- Chaetosiphonaceae
- Chaetosiphonaceae Blackman & Tansley, 1902
- Chalarodora Pascher
- Chalmasia Solms-Laubach, 1895
- Chamaedoris Montagne, 1842
- Chamaetrichon D.D.Tupa, 1974
- Characiaceae
- Characiella Schmidle, 1902
- Characiellopsis M.O.P.Iyengar, 1975
- Characiochloridaceae
- Characiochloris Pascher, 1927
- Characiopodium G.L.Floyd & S.Watanabe, 1993
- Characiosiphon Iyengar, 1936
- Characiosiphonaceae
- Characium Braun ex Kützing, 1849
- Chauvinia
- Chlainomonas H.R.Christen, 1959
- Chlamydoblepharis Franzé, 1894
- Chlamydocapsa Fott, 1972
- Chlamydomonadaceae
- Chlamydomonadales
- Chlamydomonadopsis B.Fott, 1972
- Chlamydomonas Ehrenberg, 1833
- Chlamydonephris H.Ettl & O.Ettl, 1959
- Chlamydophacus J.Massart, 1901
- Chlamydopodium Ettl & Komárek, 1982
- Chlamydosphaera L.A.Shkorbatov
- Chloracervus P.J.L.Dangeard, 1966
- Chlorangiella De Toni, 1889
- Chlorangiellaceae
- Chlorangiogloea Korshikov, 1953
- Chlorangiopsidaceae
- Chlorangiopsis Korshikov, 1932
- Chloranomala Mitra, 1950
- Chlorcorona Fott, 1967
- Chlorella M.Beijerinck, 1890
- Chlorellaceae Brunnthaler, 1913
- Chlorellales
- Chlorellales incertae sedis
- Chloremys Pascher, 1940
- Chlorepithema Pascher, 1940
- Chlorhormidium B.Fott, 1960
- Chlorobrachis Korshikov, 1925
- Chloroceras Schiller, 1927
- Chlorochytriaceae
- Chlorochytrium Cohn, 1872
- Chloroclados Sonder, 1871
- Chlorocladus
- Chloroclonium Borzì, 1895
- Chlorococcaceae
- Chlorococcum Meneghini, 1842
- Chlorocorona Fott
- Chlorocystidaceae
- Chlorocystidales
- Chlorocystis L.Reinhard, 1885
Porodica Chlorodendraceae Oltmanns, 1904
- Ecballocystopsis Iyengar, 1933
- Prasinocladus Kuckuck, 1894
- Scherffelia Pascher, 1911
- Tetraselmis F.Stein, 1878
Chlorophyta → Prasinophyceae → Chlorodendrales
Red Chlorodendrales Melkonian, 1990
- Porodica Chlorodendraceae Oltmanns, 1904
- Porodica Halosphaeraceae Haeckel, 1894
- Chlorodendrophyceae
- Chlorodesmis Harvey & Bailey, 1841
- Chlorogonium Ehrenberg, 1837
- Chlorohippotes R.H.Thompson ex R.H.Thompson & P.Timpano, 1984
- Chloroidium Nadson, 1906
- Chlorojackia R.Nielsen & J.A.Correa, 1988
- Chlorokremys Wujek & Thompson, 2008
- Chlorolobion Korshikov, 1953
- Chloromonas Gobi, 1899-1900
- Chloronephris Pascher & Jahoda, 1928
- Chloronomala Mitra, 1950
- Chloroparva Somogyi, Felfoldi & Voros, 2011
- Chloropelta Tanner, 1980
- Chlorophyceae
Razred Chlorophyceae Wille, 1884
- Red Acrosiphoniales
- Red Caulerpales
- Red Chaetopeltidales
- Red Chaetophorales
- Red Chlamydomonadales
- Red Chlorocystidales
- Red Chlorophyceae incertae sedis
- Red Codiales
- Red Dunaliellales
- Red Oedogoniales
- Red Phaeophilales
- Red Sphaeropleales
- Red Tetrasporales
- Red Volvocales
- Chlorophyceae incertae sedis
- Chlorophysema Pascher, 1927
Koljeno Chlorophyta Pascher, 1914
- Razred Chlorophyceae
- Razred Chlorophyta incertae sedis
- Razred Mamiellophyceae
- Razred Nephroselmidophyceae
- Razred Pedinophyceae
- Razred Pleurastrophyceae
- Razred Prasinophyceae
- Razred Trebouxiophyceae
- Razred Ulvophyceae
Chlorophyta incertae sedis
- Chloroplana Gollerbach, 1936
- Chloropteridella P.C.Silva, 1970
- Chlorosarcina Gerneck
- Chlorosarcinaceae Bourrelly ex Groover & Bold, 1969
- Chlorosarcinopsis Herndon, 1958
- Chlorosphaeropsis Vischer, 1933
- Chlorotetraedron F.J.MacEntee, H.C.Bold & P.A.Archibald, 1978
- Chlorotetras Gerneck, 1907
- Chlorothrix Y.Berger-Perrot, 1982
- Chlorotriangulum Kufferath, 1914
- Chlorotylium Kützing, 1843
- Chodatella Lemmermann
- Chodatellopsis Korshikov, 1953
- Chodatia E.Kol, 1934
- Chondrosphaera Skuja, 1964
- Choreoclonium Reinsch, 1876
- Choricystis (Skuja) Fott, 1976
- Chromochloris Kol & F.Chodat, 1934
- Chromopeltis P.F.Reinsch, 1875
Cl
- Cladocephalus M.A.Howe, 1905
- Cladogonium H.Hirose & M.Akiyama, 1971
- Cladophora Kützing, 1843
- Cladophoraceae Wille, 1884
- Cladophorales
- Cladophorella F.E.Fritsch, 1944
- Cladophoropsis Børgesen, 1905
- Cladostroma Skuja, 1937
- Cloniophora L.H.Tiffany, 1936
- Cloniophoraceae
- Closteridium Reinsch, 1888
- Closteriococcus W.Schmidle, 1905
- Closteriopsis Lemmermann, 1899
Co
- Coccobotrys Chodat, 1913
- Coccomonas Stein, 1878
- Coccomyxa Schmidle, 1901
- Coccomyxaceae Smith, 1933
Coccopterum P.C.Silva
- Coccopterum labyrinthus (Ostenfeld) P.C.Silva, 1970
Chlorophyta → Prasinophyceae → Pyramimonadales → Pyramimonadaceae
- Coccothrix P.A.Broady & G.M.Lokhorst, 2000
- Codiaceae
- Codiaceae Kützing, 1843
- Codiales
- Codiolaceae
- Codiolales
- Codiolum A.Braun, 1855
- Codium
- Codium Stackhouse, 1797
- Coelastreae
- Coelastrella Chodat, 1922
- Coelastroideae
- Coelastropsis B.Fott & T.Kalina, 1979
- Coelastrum Nägeli, 1849
- Coenobotrys I.Kostikov, T.Darienko, A.Lukesová & L.Hoffmann
- Coenochloris Korshikov, 1953
- Coenococcus Korshikov, 1953
- Coenocystis Korshikov, 1953
- Coenodispora I.Kostikov, T.Darienko, A.Lukesová & L.Hoffmann, 2002
- Coenolamellus A.I.Proshkina-Lavrenko, 1966
- Cohniella Schröder, 1897
- Coleochlamys Korshikov, 1953
- Collinsiella Setchell & Gardner, 1903
- Collinsiellaceae Chihara, 1967
- Collinsiellopsis Chihara, 1967
- Colonella
- Comasiella E.Hegewald, M.Wolf, A.Keller, Friedl & Krienitz, 2010
- Confervites Brongniart
- Conipora
- Coniporella J.-C.Fischer & Thierry
- Connexia Kochansky-Devidé
- Conococcus H.J.Carter
- Conodictyum Graf G. zu Münster ex G.A.Goldfuss, 1829
- Conradia Kufferath, 1914
- Conradimonas Kufferath, 1954
- Conjugate
- Copelandosphaera (Shaw) Printz
- Corbierea P.-A.Dangeard, 1888
- Coronastrum R.H.Thompson, 1938
- Corradoria
- Corradoria V.B.A.Trevisan, 1849
- Costatochloris H.Ettl & O.Ettl, 1959
Cr
- Crassikamaena P.L.Brenckle, 1985
- Craterospermum A.Braun, 1855
- Crenacantha Kützing, 1843
- Cribrokamaena P.L.Brenckle, 1985
- Crucigenia Morren, 1830
- Crucigeniopsis F.Hindák, 1984
- Crucigloea C.J.Soeder, 1978
- Crustomastix T.Nakayama, M.Kawachi & I.Inouye, 2000
- Cryococcus Kol & F.Chodat, 1934
- Cryocystis E.Kol
- Cryodactylon R.Chodat
Ct
- Ctenocladaceae
- Ctenocladus Borzì, 1883
- Ctenocladus Borzì, 1883
Cu
- Cuneatochara L.Ya.Saidakovsky, 1944
Cy
- Cyanochaete Gobi
- Cyanoptyche Pascher, 1929
- Cylindrocapsa Reinsch, 1867
- Cylindrocapsaceae
- Cylindrocapsopsis M.O.P.Iyengar, 1957
- Cylindrocelis Hindák, 1988
- Cylindromonas Hansgirg, 1888
Cymbomonas J.Schiller, 1913
- Cymbomonas adriatica Schiller, 1925
- Cymbomonas klebsii J.Schiller, 1925
- Cymbomonas tetramitiformis Schiller, 1913
Chlorophyta → Prasinophyceae → Pyramimonadales → Pyramimonadaceae
- Cymopolia J.V.Lamouroux, 1816
- Cystomonas Ettl & Gaertner, 1987
- Cystothrix J.E.Gray