Hapona paihia 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 the Auckland War Memorial Museum under registration number AMNZ5055.
The female is recorded at 2.17mm in length. The abdomen has black shading laterally.
This species is only known from Bay of Islands, New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Data Deficient" with the qualifiers of "Data Poor: Size" and "Data Poor: Trend".