Puilaurens (French pronunciation: [pɥiloʁɑ̃s] ⓘ, also non-officially: Lapradelle-Puilaurens; Occitan: La Pradèla de Puèglhaurenç) is a commune in the Aude department in southern France.

The commune is situated on the Boulzane river and the Green Meridian.

The built-up area of Lapradelle did not exist until the 19th century and owes its development to activities related to water power taken from the Boulzane: textile spinning and sawmills.

In 1904, a railway was constructed from Quillan to Rivesaltes (the Carcassonne - Rivesaltes Line) passing through Lapradelle on a viaduct spanning the valley of the Boulzane.

Afterwards it was used to transport feldspar between the Aude and the Pyrénées-Orientales, the railway line is today used in the summer for a tourist train, running between Axat and Rivesaltes.