Coopérative U (Système U before 2024) is a French symbol group retailers cooperative of independent hypermarkets and supermarkets, headquartered in the Parc Tertiaire SILIC in Rungis, France.

It owns the trademarks Hyper U, Super U, U Express and Utile, which are used by its members.

It is directly descended from the Pain Quotidien ('daily bread') cooperative which was founded in western France in 1894.

In 2023, Mercure International of Monaco will begin replacing the Casino and Géant brands with Coopérative U in Congo-Brazzaville, Gabon and Senegal.

[3] It announces that it will begin replacing its Auchan hypermarkets with Hyper U and its Bi1 supermarkets with Super U in March 2025.