Hapona momona is a species of Toxopidae spider that is endemic to New Zealand.
This species was described by Ray Forster in 1970 from a female specimen. The holotype is stored in Otago Museum.
The female is recorded at 2.26mm in length. The carapace and abdomen are shaded black laterally.
This species is only known from Taranaki, 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".