Oulens-sur-Lucens is a former municipality in the district of Broye -Vully in the canton of Vaud in Switzerland .

On July 1, 2011 it was merged into Lucens.

Oulens-sur-Lucens is first mentioned around 1403-09 as Olens.

Oulens-sur-Lucens has an area, as of 2009, of 1.59 square kilometers (0.61 sq mi). Of this area, 0.89 km2 (0.34 sq mi) or 56.0% is used for agricultural purposes, while 0.55 km2 (0.21 sq mi) or 34.6% is forested. Of the rest of the land, 0.12 km2 (30 acres) or 7.5% is settled (buildings or roads).