Leroy Merlin (French: [ləʁwa mɛʁlɛ̃]) is a French-headquartered home improvement and gardening retailer serving several countries in Europe, Asia, South America, and Africa. Leroy Merlin is owned by the Mulliez family, which also owns Auchan.

In 1923, Adolphe Leroy and Rose Merlin, associates in private and business life,[clarification needed] opened a business of American surplus. Strengthened by this first success, they decided to sell DIY products and supplies at moderate prices. In 1960, the firm was named Leroy Merlin. It became a precursor, as it was the first company to offer free delivery services.

Generally established on the outskirts of major towns and cities, Leroy Merlin stores are large centres (9000 m2 on average) providing self-service and sales assisted services. Its business is centred on six main sectors: DIY, building, gardening, sanitary equipment, renewable energy, and interior decoration.

The CNT union stated that Leroy Merlin refused to meet to reach labor agreements. According to the anarchist union, the company violated agreements on occupational risk prevention, as well as various rights regarding union action. This was confirmed by the Labor Inspectorate. He would also have carried out disciplinary dismissals without objective reason against several workers of the union section of CNT. Among other actions, the Confederation called rallies in front of several establishments throughout the country, in towns such as Maresme, Valladolid, Gijón, Burgos, Ciudad Real, Fuenlabrada and Aranjuez, in addition to Salamanca itself, where the conflict began.