Northwestern Consolidated Milling Company was an American flour milling company that operated about one-quarter of the mills in Minneapolis, Minnesota, when the city was the flour milling capital of the world. Formed as a business entity, Northwestern produced flour for the half-century between 1891 and 1953, when its A Mill was converted to storage and light manufacturing. At its founding, Northwestern was the city's and the world's second-largest flour milling company after Pillsbury, with what is today General Mills a close third. The company became one of three constituents of a Minneapolis oligopoly that owned almost nine percent of the country's flour and grist production and products by 1905. This occurred as a result of their attempt at a United States monopoly.