Cort Guitars is a guitar manufacturer centered in South Korea. The company is one of the largest guitar makers in the world, and produces instruments for many other companies.

Jack Westheimer set up business connections with Japanese guitar makers in the 1960s with the intention of importing Japanese made guitars into America. Some of the many brands that Jack Westheimer is associated with were Teisco, Cortez, Pearl, Silvertone, Kingston, Cort and many others. In 1973, Jack Westheimer founded the Yoo-Ah company in South Korea with Yung H. Park as a business partner. The Yoo-Ah company would eventually be called Cor-Tek which was named after Jack Westheimer’s Cortez brand name. Yung H. Park eventually acquired the operations of the Cor-Tek company. Cor-Tek manufactures Cort branded guitars as well as engaging in OEM manufacturing for numerous brands.