Atac (styled ATAC) is a brand of predominantly food stores operating supermarkets, created by the Docks de France in 1985, and a subsidiary of the Auchan Group since 1998.
The idea of the Atac concept was a supermarket which was near bare, with no frills and low prices. One of their slogans was "ATAC, attack prices". Most Atac stores disappeared in 2009, when most stores took the name and brand of Simply Market. There are today still around 80 Atac stores left, mainly in Bourgogne, which are owned by the associated group Schiever.