Gattya is a genus of hydroids in the family Halopterididae.

[1] The genus name of Gattya is in honour of Margaret Gatty (née Scott, 1809–1873), who was an English children's author and writer on marine biology.

[2] The genus was circumscribed by William Henry Harvey in Trans.

The following species are classed in the genus Gattya:[1]

This Leptothecata-related article is a stub.