Kosta Glasbruk (later known as Kosta Boda) is a Swedish glassworks founded by two foreign officers in Charles XII's army, Anders Koskull and Georg Bogislaus Stael von Holstein, in 1742 . It is located in Kosta, Sweden. The surrounding region has become known as the "Kingdom of Crystal" and is now a tourist site which attracts a million visitors annually.

Early production consisted of window glass, chandeliers and drinking glasses. From the 1840s, the factory was at the forefront of new trends and technical developments, producing pressed glass, and in the 1880s setting up a new glass-cutting workshop.

In 1903, the company merged with the Reijmyre glassworks but both retained their own names and Kosta went on to maintain its reputation as one of the leading Swedish manufacturers with a range of fine art glass and tableware by distinguished designers such as Vicke Lindstrand, artistic director from 1950-1973.

Having merged with Boda Glasbruk in Emmaboda Municipality, Kosta Glasbruk is still active today under the name of Kosta Boda. Since June 1, 2005, the owner of the glassworks has been the corporate development company, the New Wave Group. This also includes the glassworks in Åfors and Orrefors.