Grantiidae

Grantiidae is 'n familie van sponsdiere uit die klas van die Calcarea (kalksponse).

Genusse 
 Amphiute (Hanitsch, 1894)
 Aphroceras (Gray, 1858)
 Grantia (Fleming, 1828)
 Leucandra (Haeckel, 1872)
 Leucandrilla (Borojevic, Boury-Esnault & Vacelet, 2000)
 Leucettaga (Haeckel, 1872)
 Sycandra (Haeckel, 1872)
 Sycodorus (Haeckel, 1872)
 Sycute (Dendy & Row, 1913)
 Synute (Dendy, 1892)
 Teichonopsis (Dendy & Row, 1913)
 Ute (Schmidt, 1862)