Rhabdocalyptus is 'n genus van sponsdiere uit die klas van die Hexactinellida.
Spesies Rhabdocalyptus arcticus Brøndsted, 1916 Rhabdocalyptus asper Schulze, 1899 Rhabdocalyptus australis Topsent, 1901 Rhabdocalyptus baculifer Schulze, 1904 Rhabdocalyptus bidentatus Okada, 1932 Rhabdocalyptus borealis Okada, 1932 Rhabdocalyptus capillatus Ijima, 1897 Rhabdocalyptus dawsoni (Lambe, 1893) Rhabdocalyptus heteraster Okada, 1932 Rhabdocalyptus mirabilis Schulze, 1899 Rhabdocalyptus mollis Schulze, 1886 Rhabdocalyptus monstraster Tabachnick, 1994 Rhabdocalyptus nodulosus Schulze, 1899 Rhabdocalyptus plumodigitatus Kirkpatrick, 1901 Rhabdocalyptus tener Schulze, 1899 Rhabdocalyptus tenuis Schulze, 1899 Rhabdocalyptus unguiculatus Ijima, 1904 Rhabdocalyptus victor Ijima, 1897