Neoserica jiulongensis is a species of beetle of the family Scarabaeidae. It is found in China (Sichuan).
Adults reach a length of about 9.4 mm. They have a reddish brown, oblong body. The antennal club is yellowish brown. The dorsal surface is moderately shiny and nearly glabrous, except for a few long setae on the head.
The species is named after its type locality, Jiulong.