Testacea

Testacea may refer to:
 * a former order of rhizopods, which consisted of testate amoeboid organisms.
 * a former group of shelled molluscs and other invertebrates, created by Linnaeus and roughly corresponding to the colloquial term seashell (see Vermes).
 * a species group of Drosophila in the Drosophila (subgenus).