Goyenia sylvatica is a species of Desidae spider that is endemic to New Zealand.
This species was described in 1970 by Ray Forster from male and specimens. The holotype is stored in Te Papa Museum under registration number AS.000115.
The male recorded at 5.27mm in length whereas the female is 5.69mm. The cephalothorax and legs are coloured pale yellow brown. The abdomen is creamy with dark patches dorsally.
This species is only known from Stewart Island and Bench Island in New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Not Threatened".