Nannenus is a genus of Asian jumping spiders that was first described by Eugène Louis Simon in 1902.
Both sexes are about long. The cephalus is high, the eye region blackish with the area between the rear eyes lighter. The rest of the thorax is brown with a whitish lateral band on each side. The abdomen is small and light yellowish with a vague white pattern.
it contains six species, found only in Asia: