Arthur Reed Ropes (23 December 1859 – 11 September 1933), better known under the pseudonym Adrian Ross, was a prolific writer of lyrics, contributing songs to more than sixty British musical comedies in the late 19th and early 20th centuries. He was the most important lyricist of the British stage during a career that spanned five decades. At a time when few shows had long runs, sixteen of his West End shows ran for over 400 performances.
During World War I, Ross was one of the founders of the Performing Rights Society. He continued writing until 1930, producing several more successes after the war. He also wrote the popular novel The Hole of the Pit and a number of short stories.