Grantiidae

{{short description|Family of calcareous sponges in the order Leucosolenida}}

{{Automatic taxobox

| image = Haeckel Calcispongiae Grantia compressa.jpg

| image_alt = Illustration of "Grantia compressa" by Ernst Haeckel

| image_caption = Illustration of Grantia compressa by Ernst Haeckel

| taxon = Grantiidae

| authority = Dendy, 1892

| subdivision_ranks = Genera

| subdivision =

• Amphiute Hanitsch, 1894
• Aphroceras Gray, 1858
• Grantia Fleming, 1828
• Leucandra Haeckel, 1872
• Leucandrilla Borojevic, Boury-Esnault & Vacelet, 2000
• Leucettaga Haeckel, 1872
• Paragrantia Hôzawa, 1940
• Sycandra Haeckel, 1872
• Sycodorus Haeckel, 1872
• Sycute Dendy & Row, 1913
• Synute Dendy, 1892
• Teichonopsis Dendy & Row, 1913
• Ute Schmidt, 1862

}}

Grantiidae is a family of calcareous sponges in the order Leucosolenida.{{Cite web|url=http://www.marinespecies.org/aphia.php?p=taxdetails&id=131591|title=WoRMS - World Register of Marine Species - Leucosolenida|website=www.marinespecies.org|access-date=2019-03-20}}