Luc-la-Primaube (French pronunciation: [lyk la pʁimob]; Occitan: Luc) is a commune in the Aveyron department in southern France, in Occitanie, 10 kilometres south of Rodez.

Its inhabitants are called Lucois or Primaubois, after the two towns in the commune, Luc and La Primaube, which are 3 km (1.9 mi) apart.

La Primaube is a commercial small town built on flat ground, without river or hill, which has a church with a bell-tower, and a commercial area with fountains.

The history of Luc-la-Primaube is related to the old parish of Capelle Saint-Martin, which was formerly under the domination of the abbey of Bonnecombe.

The relic of Saint-Martin once brought many people to the parish to cure the disease known as "worms".