Organza is a thin, plain weave, sheer fabric traditionally made from silk, the continuous filament of silkworms. Nowadays, though many organzas are woven with synthetic filament fibers such as polyester or nylon, the most luxurious organzas are still woven in silk. Silk organza is woven by a number of mills along the Yangtze River and in the province of Zhejiang in China. A coarser silk organza is woven in the Bangalore area of India. Deluxe silk organzas are woven in France and Italy.

Silk organza is used for bridalwear and eveningwear. In the interiors market it is used for effects in bedrooms and between rooms. Double-width organzas in viscose and acetate are used as sheer curtains.