Sphenomorphus pratti is a species of skink, a lizard in the family Scincidae.

The species is endemic to Papua New Guinea.

[2] S. pratti is found throughout Papua New Guinea except in savanna areas in the south.

[3] The preferred habitat of S. pratti is forest.

[4] The specific name, pratti, is in honor of British naturalist Antwerp Edgar Pratt who collected the type specimen.