Gignac-la-Nerthe (French pronunciation: [ʒiɲak la nɛʁt]; Occitan: Ginhac) is a commune in the Bouches-du-Rhône department in southern France.

It is located about 10 km north-north-west of Marseille and is primarily a residential community.

[3] In the 13th century, the Knights Templar built the Saint-Michel de Gignac castle.

In the 19th century, many migrants from Spain and Italy came to live in the area, but the town only started to grow in the 1960s with the arrival of Pieds-Noirs from Algeria.

Gignac-la-Nerthe is situated just north of the Estaque hills and south of the Étang de Berre.