The fashion industry is a multibillion-dollar global enterprise devoted to the business of making and selling clothes. Some observers distinguish between the fashion industry (which makes "high fashion") and the apparel industry (which makes ordinary clothes or "mass fashion"), but by the 1970s the boundaries between them had blurred.

The fashion industry consists of four levels: the production of raw materials, principally fibers and textiles but also leather and fur; the production of fashion goods by designers, manufacturers, contractors, and others; retail sales; and various forms of advertising and promotion.