Kay Musical Instrument Company (often referred to simply as Kay) was an American musical instrument manufacturer established in 1931 by namesake Henry "Kay" Kuhrmeyer and based in Chicago, Illinois. It was formed when Kuhrmeyer bought out his financial backers in the instrument manufacturer Stromberg-Voisinet. They produced guitars, mandolins, banjos, ukuleles and were known for their use of lamination in the construction of arched top instruments.