James Bridie (3 January 1888; Glasgow – 29 January 1951; Edinburgh) was the pseudonym of a Scottish playwright, screenwriter and surgeon whose real name was Osborne Henry Mavor.
Mavor studied medicine at the University of Glasgow, then served as a military doctor during World War I, seeing service in France and Mesopotamia. His comedic plays saw success in London, and he became a full time writer in 1938. Despite this, he returned to the army during World War II, again serving as a doctor.
He was the main founder of the Citizens Theatre in Glasgow. James Bridie worked with the director Alfred Hitchcock in the late 1940s. They worked together on:
Bridie died in Edinburgh. The Bridie Library at the Glasgow University Union is named for him, as is the annual Bridie Dinner that takes place in the Union each December.