Lanark Grammar School is a secondary school in Lanark, Scotland. It was founded in 1183, and celebrated its octocentenary in 1983, including a visit by The Princess Anne. The school draws its pupils from the town of Lanark and many villages in the local area, including Douglas, Carstairs and Braehead. The Head Teacher is Jeff Warden, who took over in January 2022 following Mark Sherry who served 17 years in post.