The south-western spiny-tailed gecko (Strophurus spinigerus), also known commonly as the soft spiny-tailed gecko, is a species of lizard in the family Diplodactylidae.

S. spinigerus is found in the southwestern part of the Australian state of Western Australia.

[1] S. spinigerus may attain a total length (including tail) of 11.4 cm (4.5 in).

Ventrally, it is dirty white, either uniform or speckled with black.

[2] Nota bene: A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other than Strophurus.