Stereonephthya is een geslacht van neteldieren uit de klasse van de Anthozoa (bloemdieren).
Soorten Stereonephthya acaulis Verseveldt, 1968 Stereonephthya acicularis Verseveldt, 1966 Stereonephthya armata Kükenthal, 1910 Stereonephthya bellissima Thomson & Dean, 1931 Stereonephthya campanulata Roxas, 1933 Stereonephthya cordylophora Verseveldt, 1973 Stereonephthya crystallina Kükenthal, 1905 Stereonephthya cundabiluensis Verseveldt, 1965 Stereonephthya cupuliformis Verseveldt, 1966 Stereonephthya curvata Kükenthal, 1910 Stereonephthya divergens Thomson & Dean, 1931 Stereonephthya hirsuta Tixier-Durivault, 1970 Stereonephthya hyalina Utinomi, 1954 Stereonephthya ilex Thomson & Dean, 1931 Stereonephthya imbricans Thomson & Dean, 1931 Stereonephthya inordinata Tixier-Durivault, 1970 Stereonephthya irregulare Tixier-Durivault, 1970 Stereonephthya japonica Utinomi, 1954 Stereonephthya kuekenthali Thomson & Mackinnon, 1910 Stereonephthya lutea Shann, 1912 Stereonephthya macrospiculata Thomson & Mackinnon, 1910 Stereonephthya multispina Verseveldt, 1966 Stereonephthya nosybearia Verseveldt, 1973 Stereonephthya ochracea Kükenthal, 1910 Stereonephthya osimaensis Utinomi, 1954 Stereonephthya papyracea Kükenthal, 1905 Stereonephthya pedunculata Thomson & Dean, 1931 Stereonephthya plessisi Tixier-Durivault, 1970 Stereonephthya portoricensis (Hargitt, 1901) Stereonephthya rakaiyae Hickson & Hiles, 1908 Stereonephthya rubriflora Utinomi, 1954 Stereonephthya scaphis Verseveldt, 1973 Stereonephthya spicata Thomson & Dean, 1931 Stereonephthya ulicoides Thomson & Dean, 1931 Stereonephthya whiteleggi Kükenthal, 1905 Stereonephthya zanzibarensis Thomson & Henderson, 1906