Acinetactis is a possible genus of protist first described in 1886 by A.C. Stokes, who also described the type species A.

[1] In 1928, Valkanov reported the discovery of a second species, A.

[3] The validity and classification of this genus is contested.

In 1914, Adolf Pascher cast doubt on Acinetactis, suggesting that it was a junior synonym of Dimorpha mutans.

[5] Bass et al. suggested in 2009 that the genus was a cercozoan in the class Granofilosea.