Cantuaria lomasi is a species of trapdoor spider endemic to New Zealand.

[1] This species was described in 1968 by Ray Forster from a single female specimen collected in Makarora.

[1] The holotype is stored at Te Papa Museum under registration number AS.000058.

[1] 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".

[3] This article related to mygalomorph spiders is a stub.