Hugo Kortschak (28 February 1884 – 19 September 1957) was an Austrian-born American violinist and a member of the Chicago Symphony Orchestra from 1907 until 1914 (serving as assistant concertmaster from 1910 until 1914), founding member of the Berkshire String Quartet and Dean of Music at Yale University. His son was the plant physiologist Hugo P. Kortschak. Kortschak was a key figure in organizing the Berkshire Chamber Music Festival founded by Coolidge. The original Berkshire String Quartet disbanded sometime after 1941.