Neoserica loeffleri is a species of beetle of the family Scarabaeidae. It is found in Myanmar.
Adults reach a length of about 9 mm. They have an dark brown, oblong body. The legs are reddish brown and the antennal club is yellowish brown. The dorsal surface is mostly dull and nearly glabrous.
The species is named after one of its collectors, S. Löffler.