Rognac (French pronunciation: [ʁɔɲak]; Occitan: Ronhac) is a commune in the Bouches-du-Rhône department in the Provence-Alpes-Côte d'Azur region in Southern France.

Located to the east of the Étang de Berre, north of Marseille Provence Airport, it is part of the Aix-Marseille-Provence Metropolis.

Rognac is served by the Rognac TER PACA railway station, on both the Paris–Marseille railway and Rognac–Aix-en-Provence freight railway.

Rognac is twinned with: