Oenopia is an Old World genus of aphid-eating beetles in the Coccinellini tribe. The genus has been recorded in Europe, Russia, Africa, India, Sri Lanka, China, Japan, Philippines, New Guinea, and Australia.
Oenopia species are diverse in appearance, with some possessing rounded, convex forms and others elongate and flattened. The genus is distinguished by distinct characteristics in the genitalia of both sexes.
Oenopia contains the following species: