Celaenia hectori is a species of Araneidae spider that is native to New Zealand.
This species was described as Thlaosoma hectori in 1880 by Octavius Pickard-Cambridge from a single female specimen collected in Dunedin. It was transferred to Celaenia in 1917.
This species has an olive yellowish cephalothorax and legs. The abdomen is dull yellowish with dark yellow brown shading. This species is similar to Celaenia atkinsoni, but is smaller.
This species is only known from Dunedin, 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".