Citronia is a genus of sea sponges in the family Dysideidae. It consists of one species, Citronia vasiformis <small>(Bergquist, 1995)</small>, which Bergquist originally described as Euryspongia vasiformis<small>,</small> from a specimen found in the Baie de Citrons, New Caledonia at a depth of 8 to10 m.
In Australia it is found in waters off the Queensland coast.