- Fasciculochloris R.J.McLean & Trainor, 1965
- Fernandinella Chodat, 1922
- Ferricystis F.Hindák, 1988
- Fissuricella R.S.Pore, R.F.D'Amato & L.Ajello, 1977
- Flabellaria Lamarck, 1813
- Flabellia
- Flabellochara L.Grambast, 1959
- Floydiella Friedl & O'Kelly, 2002
- Fluitomonas Skvortzov, 1971
- Follicularia W.W.Miller, 1924
- Fortiella Pascher, 1927
- Fottea F.Hindák, 1968
- Fotterella R.Buck, 1978
- Fottiella Ettl, 1955
- Franceia Lemmermann, 1898
- Friedaea W.Schmidle, 1905
- Fritschiella Iyengar, 1932
- Furcilla A.Stokes, 1890
- Fusola Snow, 1903