Sir Hugh Seymour Walpole, CBE (13 March 1884 – 1 June 1941) was an English novelist. He was the son of an Anglican clergyman, intended for a career in the church but drawn instead to writing. His skill at scene-setting and vivid plots, as well as his high profile as a lecturer, brought him a large readership in the United Kingdom and North America. He was a best-selling author in the 1920s and 1930s but has been largely neglected since his death.
Walpole was a member of the Detection Club and contributed to the 1930 collaborative series Behind the Screen.