Flabellum is een geslacht van neteldieren uit de klasse van de Anthozoa (bloemdieren).
Soorten Flabellum (Flabellum) angustum Yabe & Eguchi, 1942 Flabellum (Flabellum) arcuatile Cairns, 1999 Flabellum (Flabellum) areum Cairns, 1982 Flabellum (Flabellum) atlanticum Cairns, 1979 Flabellum (Flabellum) australe Moseley, 1881 Flabellum (Flabellum) campanulatum Holdsworth, 1862 Flabellum (Flabellum) chunii Marenzeller, 1904 Flabellum (Flabellum) cinctutum Cairns & Polonio, 2013 Flabellum (Flabellum) curvatum Moseley, 1881 Flabellum (Flabellum) flexuosum Cairns, 1982 Flabellum (Flabellum) floridanum Cairns, 1991 Flabellum (Flabellum) folkesoni Cairns, 1998 Flabellum (Flabellum) gardineri Cairns, 1982 Flabellum (Flabellum) impensum Squires, 1962 Flabellum (Flabellum) knoxi Ralph & Squires, 1962 Flabellum (Flabellum) lamellulosum Alcock, 1902 Flabellum (Flabellum) magnificum Marenzeller, 1904 Flabellum (Flabellum) ongulense Eguchi, 1965 Flabellum (Flabellum) patens Moseley, 1881 Flabellum (Flabellum) pavoninum Lesson, 1831 Flabellum (Flabellum) politum Cairns, 1989 Flabellum (Flabellum) thouarsii Milne Edwards & Haime, 1848 Flabellum (Flabellum) transversale Moseley, 1881 Flabellum (Flabellum) vaughani Cairns, 1984 Flabellum (Ulocyathus) alabastrum Moseley in Thompson, 1873 Flabellum (Ulocyathus) angulare Moseley, 1876 Flabellum (Ulocyathus) aotearoa Squires, 1964 Flabellum (Ulocyathus) apertum Moseley, 1876 Flabellum (Ulocyathus) conuis Moseley, 1881 Flabellum (Ulocyathus) daphnense Durham & Barnard, 1952 Flabellum (Ulocyathus) deludens Marenzeller, 1904 Flabellum (Ulocyathus) hoffmeisteri Cairns & Parker, 1992 Flabellum (Ulocyathus) japonicum Moseley, 1881 Flabellum (Ulocyathus) lowekeyesi Squires & Ralph, 1965 Flabellum (Ulocyathus) macandrewi Gray, 1849 Flabellum (Ulocyathus) marcus Keller, 1974 Flabellum (Ulocyathus) marenzelleri Cairns, 1989 Flabellum (Ulocyathus) messum Alcock, 1902 Flabellum (Ulocyathus) moseleyi Pourtalès, 1880 Flabellum (Ulocyathus) sexcostatum Cairns, 1989 Flabellum (Ulocyathus) tuthilli Hoffmeister, 1933
Uitgestorven soorten Flabellum gallapagense Milne Edwards & Haime, 1848 † Flabellum laciniatum (Philippi, 1841) † Flabellum (Flabellum) galapagense Milne Edwards & Haime, 1848 †