Major Alfred Edward Woodley Mason (7 May 1865 Dulwich, London - 22 November 1948 London) was a British author and politician. He is best remembered for his 1902 novel The Four Feathers.

He studied at Dulwich College and graduated from Trinity College, Oxford in 1888. He was a contemporary of fellow Liberal Anthony Hope, who went on to write the adventure novel The Prisoner of Zenda.

His first novel, A Romance of Wastdale, was published in 1895. He was the author of more than 20 books, including At The Villa Rose (1910), a mystery novel in which he introduced his French detective, Inspector Hanaud. His best-known book is The Four Feathers, which has been made into several films. Many consider it his masterpiece. Other books are The House of the Arrow (1924), No Other Tiger (1927), The Prisoner in the Opal (1929) and Fire Over England (1937).