Intermarché (English translation: Intermarket) is a brand of general commercial hypermarkets, supermarkets and convenience stores owned by French retail group Les Mousquetaires. It mainly operates in France, French-speaking Belgium, Poland and Portugal. In 2024, Intermarché was the third-biggest retailer in France by market share, trailing E.Leclerc and Carrefour.

In 2024, Intermarché had 2,496 stores in 5 countries.

In 2024, Partenaire Intermarché had 60 stores in Overseas France and in 7 countries.

Founded in 1969 under the name of EX Offices de distribution, the chain became Intermarché in 1973.

On 9 June 2009, Les Mousquetaires announced the extension of the Intermarché brand to all their grocery subsidiaries, except Netto. Now Intermarché decline is based on the sales floor, as well as its location.

The old food stores owned by Les Mousquetaires under several brands, as well as the existing Intermarché stores have been divided into several groups:

On 8 October 2014, ITM Intermarché and the Casino Group announced an agreement to rally their purchases together toward suppliers in France. This alliance makes these two groups the first retail purchaser in the country with a market share of 25.8%.

In January 2024, 190 Casino and Géant Casino stores are purchased by Intermarché.