Protaetia affinis is a species of beetle of the family Scarabaeidae.
It is very common in Southern and Central Europe. It prefers continental climate.
Protaetia affinis is usually 25–30 mm long, with a thick-set body. Both sides of its body are metallic emerald. The elytra have very small punctures, and no horizontal striae. The legs are also green, with white stripes.
Adults only occasionally visit flowers. It is more frequently found at trees with juicy fruits.