Nomaua nelson is a species of Physoglenidae spider endemic to New Zealand.
This species was described in 1990 by Ray Forster from male and female specimens. It was most recently revised in 2009. The holotype is stored in Otago Museum.
The male is recorded at 3.42mm in length whereas the female is 3.06mm. This species has a pale brown carapace with a black triangular marking. The legs are brown. The abdomen has a pale dorsal band.
This species is only known from Nelson, New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Naturally Uncommon" with the qualifier of "Range Restricted".