Maladera saitoi is a species of beetle of the family Scarabaeidae. It is found in China (Fujian, Guangdong, Guangxi, Hainan, Yunnan), Taiwan, Laos and Vietnam.
Adults reach a length of about 6.5 mm. They have a dark brown to blackish, oval body. The antennae are yellow. The dorsal surface is dull and nearly glabrous, except for some single setae on the head.