Dianattus is a monotypic genus of spiders in the family Salticidae containing the single species, Dianattus proszynskii.
Dianattus proszynskii is endemic to Yunnan, China.
The genus name is a combination of "Dian" (), the abbrevetiation for Yunnan, and the common salticid genus ending "-attus". The species is named after arachnologist Jerzy Prószyà Âski.