Sphenomorphus maindroni is a species of skink. The species was originally described by Sauvage in 1879. According to the Catalogue of Life, the species Sphenomorphus maindroni does not have known subspecies.
The snout-to-vent length (SVL) is . The tail varies from nearly oval to square in cross-section.
The specific name, maindroni, is in honor of French naturalist Maurice Maindron.
Sphenomorphus maindroni is found in the Admiralty Islands, New Britain, and New Guinea.
The preferred natural habitat of Sphenomorphus maindroni is forest, at altitudes from sea level to .
Sphenomorphus maindroni is oviparous.