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 1.6–2.9 mm and a width of 1.4–2.2 mm in females. In males, the prosoma length is 2.0–2.7 mm and the width 1.6–2.0 mm.
Marusik. Y.M.. Three new species of the family Nesticidae (Aranei) from the fauna of the USSR.. Zoologicheskiĭ Zhurnal. 1987. 66. 3. 461–463.