Schwenckfeldina archoica is an extinct species of dark winged fungus gnat in the family Sciaridae known from a solitary Late Oligocene to Early Miocene[1] fossil found in Mexico.

The amber specimen, number SMNS Mx 367, is currently housed in the fossil collection of the State Museum of Natural History Stuttgart in Baden-Württemberg, Germany.

[1] The holotype was first studied by entomologists Mónica M. Solórzano Kraemer of the Institut für Paläontologie, part of the University of Bonn, and Werner Mohrig of Poseritz, Germany.

The specific epithet archoica was coined after the Greek word "archaic" as a reference to the great number of features shared between modern species and the fossil.

The inner sides of the gonocoxites are covered in numerous long bristles, while the gonostyli have an overall broad rounded shape and are brown in color.