Ademosynidae is an extinct family of beetles, known from the Late Triassic to Early Cretaceous.

[1][2][3][4] Members of the family were small oval beetles, with a length generally smaller than 1 cm.

Characteristics of the family include a pronotum without anterior angles and a rounded anterior margin, and elytra with 9–12 punctate striae.

The systematic position of the family within the order Coleoptera is currently uncertain: they can be considered early examples of the suborder Polyphaga, or unusual examples of Archostemata.

[3] The family Ademosynidae is restricted to the following six genera and 11 species in Yan, Beutel and Ponomarenko (2017):[3] The following genera and species are also included in the family according to Fossilworks, but are excluded or not mentioned in Yan, Beutel and Ponomarenko (2017):[2]