John Mathieson may refer to:

• John Alexander Mathieson (1863-1947), Premier of the Canadian province of Prince Edward Island, 1911-1917
• John Mathieson (computer scientist), computer scientist who worked for Sinclair Research and later developed the Atari Jaguar video games console
• John Mathieson (cinematographer) (born 1958), British cinematographer

[ Source: Wikipedia ]