Eupelmidae is a family of parasitic wasps in the superfamily Chalcidoidea.

The larvae of the majority are primary parasitoids, commonly on beetle larvae, though many other hosts are attacked, including spiders.

Details of the life history varies considerably (e.g., some attack eggs and others are hyperparasites).

They are somewhat variable in appearance, though a fair number of species are relatively easy to separate from other Chalcidoidea by the possession of a medially concave mesonotum.

They also have the unusual tendency to arch the body strongly upwards when dead, with the head and metasoma often nearly touching above the thorax.