Hoplia quasiplebeja is a species of beetle of the family Scarabaeidae. It is found in Vietnam.
Adults reach a length of about . They are black to reddish-brown. The upper surface is covered with black or sometimes brownish-black and brown scales, usually without a pattern. The pygidium, underside and legs are lighter and covered with yellow-brown, brown and golden-yellow scales. All hairs and setae are light.
The species name refers to its similarity to Hoplia plebeja.