| Grantiidae | 
 | 
| Illustration of Grantia compressa by Ernst Haeckel | 
| Scientific classification  | 
| Domain: | 
Eukaryota | 
 
| Kingdom: | 
Animalia | 
 
| Phylum: | 
Porifera | 
 
| Class: | 
Calcarea | 
 
| Order: | 
Leucosolenida | 
 
| Family: | 
Grantiidae Dendy, 1892 | 
| Genera | 
- 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.