Euophrys nana is a species of jumping spider in the genus Euophrys that is endemic to South Africa. The species was first described in 2014 by Wanda Wesołowska, Galina Azarkina and Anthony Russell-Smith. It is a small spider, with a body that consists of a cephalothorax that is typically 1 mm (0.04 in) long and an abdomen that is typically 1.5 mm (0.06 in) long. The carapace, the topside of the cephalothorax is brown a central yellow stripe. The underside of the cephalothorax, or sternum, is yellowish-brown. The abdomen has a distinctive pattern of brown and white stripes around its entire body. It is this pattern that differentiates the spider from related species. The copulatory organs are also unique amongst spiders in the genus, particularly the very long thin embolus on the palpal bulb of the male. The female has not been described.

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