• Thrinax Konow, 1885 [Family: Tenthredinidae]
• Thrinax O. Swartz, 1788 [Family: Arecaceae]
• Thrinax Pfeil, 1983 † [Family: Chlamydoselachidae]
• Thrinax floridana Sarg. accepted as Thrinax radiata Lodd. ex J.A. & J.H. Schultes
• Thrinax keyensis Sarg. accepted as Thrinax morrisii H. Wendl.
• Thrinax microcarpa Sarg. accepted as Thrinax morrisii H. Wendl.
• Thrinax microcarpum accepted as Thrinax morrisii H. Wendl.
• Thrinax morrisii H. Wendl.
• Thrinax multiflora sensu R.W. Read, non Mart. accepted as Thrinax radiata Lodd. ex J.A. & J.H. Schultes
• Thrinax parviflora auct. non Sw. accepted as Thrinax radiata Lodd. ex J.A. & J.H. Schultes
• Thrinax ponceana O.F. Cook accepted as Thrinax morrisii H. Wendl.
• Thrinax praeceps O.F. Cook accepted as Thrinax morrisii H. Wendl.
• Thrinax radiata Lodd. ex J.A. & J.H. Schultes
• Thrinaxodon Seeley, 1894 †
• Thrinaxodontidae Watson & Romer, 1956 †
• Thrinaxopus Sarjeant & Langston, 1994 † (uncertain)
• Thrinaxoria Chamberlin & Hoffman, 1950 accepted as Dicellarius Chamberlin, 1920
• Thrinaxoria bifida (Wood, 1864)
• Thrinaxoria lampra (Chamberlin, 1918)