Ineos Group Limited is a British multinational conglomerate headquartered and registered in London. As of 2021, it is the fourth largest chemical company in the world, with additional operations in fuel, packaging and food, construction, automotive, pharmaceuticals, textiles, and professional sports. Ineos is organised into about 20 standalone business units, each with its own board and operating almost entirely independently, although founder Jim Ratcliffe, who owns a controlling interest, and his associates, who collectively own a minority share, sit on their boards occasionally.

Sir James Arthur Ratcliffe is a British billionaire, chemical engineer, and businessman. Ratcliffe is the chairman and chief executive officer (CEO) of the INEOS chemicals group, which he founded in 1998.