Gasparia nelsonensis is a species of Toxopidae spider that is endemic to New Zealand.
This species was described by Ray Forster in 1970 from a male specimen. The holotype is stored in Otago Museum.
The male is recorded at 5.18mm in length. The body has various dark markings forming patterns.
This species is only known from Nelson, New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Data Deficient" with the qualifiers of "Data Poor: Size", "Data Poor: Trend" and "One Location".