Ka
- Kalinella J.Neustupa, Y.Nemcova, M.Eliás & P.Skaloud, 2009
- Kamaena Antropov
- Kantia Pia
- Kazakhstanelia Korde
Ke
- Keratococcus Pascher, 1915
- Keriochlamys Pascher, 1943
- Kermatia T.Kalina & M.Puncochárová, 1987
Ki
- Kirchneriella Schmidle, 1893
- Kirchneriellosaccus A.K.M.N.Islam, 1969
- Kitakamiania Ishijima
Kl
- Klebahniella E.Lemmermann, 1895
- Klebsimastix Skvortzov
- Kleiniella Francé
Ko
- Koliella Hindák, 1963
- Koliellaceae
- Koliellopsis Lokhorst, 2004
- Komarekia Fott, 1981
- Kopetdagaria Maslov
- Kornmannia Bliding, 1969
- Kornmanniaceae
- Korschikoffia Pascher, 1927
- Korschpalmella Fott, 1974
- Korshikoviella P.C.Silva, 1959
- Korshikoviobispora I.Kostikov, T.Darienko, A.Lukesová & L.Hoffmann, 2002
- Korsikovella Valkanov
- Kosmogyra G.Stache
- Kosmogyrella Stache
- Kosmogyrina Mädler
Kr
- Kremastochloris Pascher, 1942
- Kruegera Heering
Ky
Kymatotrichon B.Schussnig, 1928
- Kymatotrichon armatum B.Schussnig, tipična vrsta
Plantae → Chlorophyta → Chlorophyceae → Chaetophorales → Chaetophoraceae