Rhizomolgula is a genus of ascidian tunicates in the family Molgulidae.
Species within the genus Rhizomolgula include:
Rhizomolgula globularis (Pallas, 1776)Rhizomolgula japonica Oka, 1926Species names currently considered to be synonyms:
Rhizomolgula arenaria Ritter, 1901: synonym of Rhizomolgula globularis (Pallas, 1776)Rhizomolgula gigantea Redikorzev, 1907: synonym of Rhizomolgula globularis (Pallas, 1776)Rhizomolgula intermedia Michaelsen, 1908: synonym of Rhizomolgula globularis (Pallas, 1776)Rhizomolgula ritteri Hartmeyer, 1903: synonym of Rhizomolgula globularis (Pallas, 1776)Rhizomolgula warpachovskii Redikorzev, 1908: synonym of Rhizomolgula globularis (Pallas, 1776)