Convolutidae is a family of acoels, belonging to the phylum Xenacoelomorpha.

[2][3] The family Convolutidae includes acoels with a ventral mouth opening and a body-wall musculature composed both dorsally and ventrally of circular, longitudinal, and longitudinal crossover muscle fibers.

The ventral body wall also has a group of U-shaped fibers.

[2] The anterior end has a cluster of frontal glands, a pair of eyes and a statocyst.

There are over 100 species recognised in the family Convolutidae:[4]