Dock Mathieson (May 20, 1914 - December 1985) was a Scottish film score arranger, composer and conductor. He was born in Stirling with the name John Davie Mathieson. He was the younger brother of Muir Mathieson, another film score composer, arranger and conductor. On the death of Ernest Irving (Muir's older counterpart at Ealing Studios) in October 1953, Dock took over the position as director of music at Ealing. Dock died in Oxford.