Sigaloseps deplanchei, Deplanche's shiny skink, is a species of lizard in the family Scincidae.

[2] The specific name, deplanchei, is in honor of French naval surgeon Émile Deplanche.

[3] S. deplanchei is found in South Province, New Caledonia.

[1] The preferred natural habitats of S. deplanchei are forest and shrubland, at altitudes up to 1,000 m (3,300 ft).

[1] Medium-sized for the genus Sigaloseps, adults of S. deplanchei have a snout-to-vent length (SVL) of not more than 4.6 cm (1.8 in).