• Afrenella Berio, 1965
• Arenella Semon, 1921 (uncertain)
• Crenella T. Brown, 1827
• Fainella † (uncertain)
• Famenella Polenova, 1953 †
• Feaella Ellingsen, 1906 [Family: Feaellidae]
• Feaella S.F. Blake, 1930 (uncertain) [Family: Asteraceae]
• Fenella Westwood, 1840 (uncertain)
• Finella A. Adams, 1860
• Fragella Swainson, 1840 accepted as Clanculus Montfort, 1810
• Framella Weyant, 1968 † (uncertain)
• Frechella Legrand-Blain, 1986 †
• Fregella Walker, 1854 (uncertain)
• Fregolla Mathews, 1937 accepted as Fregetta Bonaparte, 1855
• Freilla Druce, 1890
• Fremyella De Toni, 1936 accepted as Microchaete Thuret ex Bornet & Flahault, 1886
• Frenchella Blackburn, 1892
• Frendelia Collin, 1948 (uncertain)
• Frenela Mirbel, 1825 accepted as Callitris Ventenat, 1808
• Frenesia Betten & Mosely, 1940
• Frenkelia Biocca, 1968
• Frenula Dall, 1871 accepted as Macandrevia King, 1859
• Freudella Ardoin, 1961
• Freyanella Dubinin, 1953
• Freyella Perrier, 1885
• Freyiella Bollow, 1938 accepted as Potamophilinus Grouvelle, 1896
• Freynella O. Kuntze, 1891 accepted as Corynespora H.T. Güssow, 1906
• Friesella Moure, 1947 (uncertain)
• Fronsella Laseron, 1956
• Frontella Kulczynski, 1908
• Fryeella Kylin, 1931
• Fryella Hustache, 1929
• Irenella Gude, 1913 (uncertain) [Family: Mollusca (awaiting allocation)]
• Irenella Riley, 1927 (uncertain) [Family: Aves (awaiting allocation)]
• Irenella Suessenguth, 1934 [Family: Amaranthaceae]
• Renella Lowry & Stoddart, 2012
• Trenella Parkhaev, 2001 †