George Turnbull (1698 - 1748) was a Scottish philosopher, theologian, teacher, writer on education and an early but little-known figure in the Scottish Enlightenment. He taught at Marischal College, Aberdeen, worked as a tutor and became an Anglican clergyman. Aside from his published writings on moral philosophy, he is also known for the influence he exerted on Thomas Reid and as the first member of the Scottish Enlightenment to publish a formal treatise on the theory and practice of education.