Arthur Harold Wimperis (3 December 1874 – 14 October 1953) was an English playwright, lyricist and screenwriter, who contributed lyrics and libretti to popular Edwardian musical comedies written for the stage. But, with the advent of talking films, he switched to screenwriting, finding even greater success in this medium.

Early in his career, Wimperis was an illustrator. For 25 years beginning in 1906, he became a lyricist and librettist for musical comedies, including the hit The Arcadians in 1909 and many others. After serving in the First World War, he resumed his career, writing for shows like Princess Charming (1926). Beginning in 1930, he moved into writing screenplays for British films, and, by 1940, for Hollywood films, contributing to dozens of screenplays. He won an Oscar for his contribution to the screenplay of Mrs. Miniver (1942) and was nominated for another Oscar for his contribution to the screenplay of Random Harvest (1942). He continued writing screenplays until his death.