Cotinis nitida, commonly known as the green June beetle, June bug or June beetle, is a beetle of the family Scarabaeidae. It is found in the eastern United States and Canada, where it is most abundant in the South. It is sometimes confused with the related southwestern species figeater beetle Cotinis mutabilis, which is less destructive.

The green June beetle is active during daylight hours. The adult is usually 15–22 mm (0.6–0.9 in) long with dull, metallic green wings; its sides are gold and the head, legs and underside are very bright shiny green. Their habitat extends from New Brunswick to Georgia, and as far west as California, with possible population crossover in Texas with their western cousin, the figeater beetle.