A new species of dwarfgoby, Eviota marteynae n. sp., is described from Kaafa-haa, Laamu Atoll, Maldive Islands. The new species is characterized by having a cephalic sensory-canal pore system lacking only the IT pore (Pattern 2), a dorsal/anal fin-ray formula of 8/8, one or more branched pectoral-fin rays, the fifth pelvic-fin ray present, a deep body (>23% SL), a deep caudal peduncle (>14 % SL), a rounded internal dark spot over the preural centrum, 6 postanal bars, the pectoral-fin base with scattered melanophores, and the distal two-thirds of the first dorsal fin yellow with a black margin.