Carpathonesticus mamajevae is an araneomorph spider species of the family Nesticidae. It occurs in Georgia, in the Lagodekhi Nature Reserve.
The prosoma has a length of 1.6âÂÂ2.9 mm and a width of 1.4âÂÂ2.2 mm in females. In males, the prosoma length is 2.0âÂÂ2.7 mm and the width 1.6âÂÂ2.0 mm.