Aphelinoidea is a genus of wasps belonging to the family Trichogrammatidae. It was described by A.A. Girault in 1911 in the Transactions of the American Entomological Society.

The genus has almost cosmopolitan distribution. Several species are egg parasitoids of leafhoppers (Hemiptera: Cicadellidae) and are of interest as biological control agents. In particular, species of Aphelinoidea parasitize eggs of the beet leafhopper, Circulifer tenellus (Baker), the sole North American vector of beet curly top virus, an economically important pathogen affecting tomatoes, sugar beets, peppers, spinach, and beans. Two species, A. anatolica and A. turanica, were introduced from Iran into California against the beet leafhopper and became established there.

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