Archaeterphis is an extinct genus of small-headed flies in the family Acroceridae.

It is known from Baltic amber from the Eocene, though the locality is unknown (possibly Russia).

[1] The generic name is a combination of the Greek word Arche (beginning) and Terphis, referring to the possible close relationship of Archaeterphis with the extant genera Africaterphis and Terphis.

The species is named in honor of Willi Hennig.

[1] This article related to members of the fly superfamily Nemestrinoidea is a stub.